Patent Landscape Analytics Report

James H. Moeller - Alpha Data IQ LLC - https://www.alphadataiq.com/
Date: 2023-07-27

How to Use this report:

  • First, read the Overview section for the report’s principle takeaways. This will add significant context to the details of the report presented below. Use the hyperlinks presented in the overview text to jump to the relevant sections of interest.

  • Then use the Table of Contents below to navigate to additional specific sections by clicking on the headings. See the descriptions of the Table of Contents items for more information.

  • This HTML report provides interactive figures and tables, with mouse-over, zoom-able data display, and searchable, sort-able tables. This provides the user with the capability to interactively explore the patent document landscape information and the analytical results.

  • The report is designed to derive strategic intelligence from the specified patent document domain collection and provide mechanisms to enable addition research. This includes strategic information covering patenting trends, the IP competitive landscape, notable patent document citations, important non-patent document citations covering industry reports and media references, as well as frequently applied technology classification codes. In addition, the Summary table ( Summary of All Patent Documents in the Domain Collection ) can be queried for a wide variety of patent document information, including keyword and key phrase queries into the titles, abstracts, and claims, which are useful for freedom-to-operate analyses and basic preliminary white space and prior art inquiries. A full prior art search or thorough white space analysis are beyond the scope of this report.

  • This report is updated on an as-needed basis.

  • The application of data science and analytics to patent data enables these reports to be produced quickly and economically. Most initial analyses can be executed for under $2,500. Contact me if you need a custom report. https://www.alphadataiq.com/index.php/contact-alphadataiq

Overview:

  • Domain Collection: The principle focus of this report is to create a somewhat focused patent landscape around the pulse oximetry intellectual property domain. The domain collection for this report was created by matching the phrase "pulse oximetry" in the title, abstract, or claims (but not in the description section) of the patent documents available in Google’s BigQuery data warehouse in the patents.publications dataset. Matching this phrase in any of the specified sections will include that patent document in the domain collection. Limiting the query to the title, abstract, and claims, and not also searching the description section, is intended to narrow the search to better identify patent documents with inventions that focused on pulse oximetry technology, and not include documents that mention that phrase simply as part of some background or overview explanation included in the patent document description section. The patent documents query was executed on a worldwide basis across all US and international patent documents contained in Google’s dataset. See the Summary of All Patent Documents in the Domain Collection for more information or to execute additional queries into the domain collection documents.

    • "pulse oximetry" – matched on a worldwide basis in patent documents title, abstract, or claims, but NOT the description section.

    • The resulting domain collection consists of 3,526 total documents of which there are 2,515 patent applications and 1,250 granted patents.

  • Patenting Activity: Patenting activity in this domain collection began in 1986 and continued at a relatively low level (less than 50 applications per year) until 2001, when activity increased somewhat significantly and more than doubled on a year-over-year basis. The first patents filed in this domain collection are a pair of applications by Physio Control Corporation in August of 1986 ( app # US4859056A entitled “Multiple-pulse Method and Apparatus for Use in Oximetry” and app # US4913150A entitled “Method and Apparatus for the Automatic Calibration of Signals Employed in Oximetry” ). Physio Control was a manufacturer of external defibrillators headquartered in Redmond, Washington. The company was purchased by Medtronic in 1998 and then subsequently sold to Bain Capital in 2011 , which most recently sold Physio Control to Stryker Corporation in 2016. Since 2001, patenting activity has remained relatively high (~100-200+ applications per year, and ~30-70+ granted patents per year) but somewhat variable, without any consistent growth trends. The most current annual numbers generally indicate that there are approximately 130 to 190 new applications and 40 to 60 granted patents annually. See the Domain Collection Date Coverage Table and the Patenting Trends Timeline for the Domain Collection .

  • Patenting Trends: The pendency period for granted patents (i.e. the time between application and patent approval), over the most active filing period from 2001 to 2020, has varied from 5 years to as low as ~2.5 years. The most recent consistent trend since 2015 is indicating a pendency period that’s approximately 2.5 to 3 years. This indicates that the most recent 2.5 to 3 years of data in the patenting trend charts ( Patenting Trends Timeline for the Domain Collection ), 2020-2023, are very likely incomplete data. As a result, the Applications and Granted Patents Timeline is indicating generally flat patent application filing trends with 130 to 190 new applications filed annually. The granted patent approval percentage trend since 2001 has remained relatively flat at approximately 30%-35%, which is 40 to 60 granted patents annually. See the Approval Rate (%) and Pendency Period charts. The flat application filing trends combined with the flat approval rate, together indicate a generally stable patenting environment.

  • Top Inventors & Their Assignees: Of the 10 leading inventors, all but two are principally associated with either Masimo Corporation or Medtronic (via Nellcor Puritan Bennett, its inclusion in Tyco’s Covidien spin-out , and subsequent acquisition by Medtronic ). Masimo and Medtronic are the two leading assignees in this domain collection (see below). The leading inventor in this domain collection is clearly Ammar Al-Ali, who is listed on 184 patent documents, twice as many as the 2 nd ranked inventor. Ammar Al-Ali is the Chief Engineer and long-time researcher for Masimo Corporation and looks to have also held development positions at Cercacor Laboratories, Inc. Cercacor is an independent business that was spun-out from Masimo in 1998 but continues to cross-license its developed technologies to Masimo. Joe Kiani is currently the CEO of both Masimo Corporation and Cercacor Laboratories. The 2 nd ranked inventor is Paul Mannheimer , who is listed on 92 patents and was a long-time Chief Scientist for Nellcor/Covidien, which as noted above is today part of Medtronic . Nellcor Puritan Bennett was part of Tyco’s Covidien spin-out in 2007 and Covidien was acquired by Medtronic in 2014. The 3 rd ranked inventor is Matthew Banet , who is listed on 67 patent documents, mostly assigned to toSense Inc. toSense was a medtech company focused on sensors and software applications for non-invasive patient monitoring that was based in La Jolla, California. In 2020, toSense was acquired by Baxter International . Mr. Banet was the Founder, President, and Chief Scientific Officer for toSense and is currently CEO of a startup named Bloodmetrix, in San Diego. The 4 th ranked inventor is Paul Addison , listed on 66 patent documents with most of those assigned to Medtronic (via Nellcor Puritan Bennett). Mr. Addison was a long-time scientist for Nellcor/Covidien and is currently the Chief Scientist for Medtronic’s Patient Monitoring group. The 5 th ranked inventor is Marshal Dhillon , listed on 63 patent documents, mostly assigned with toSense Inc. Mr. Dhillon was the CTO of toSense and is currently Senior Vice President of Engineering for BioIntelliSense, Inc , a remote patient medical monitoring system company headquartered in Denver, Colorado. Further analysis of the Top Inventors list show that many individuals ranked in the top 50 are also principally associated with either Masimo, Medtronic, or toSense, in additional a number of other companies such as Philips N.V. , Sotera Wireless Inc. (see also Triage Wireless, Inc. Becomes Sotera Wireless, Inc. ), Zoll Medical Corporation , Raydiant Oximetry Inc. , and others. F or more information see the Top Inventors and Principal Assignees table and the complete list of 2,840 inventors.

  • IP Competitive Landscape (Top Assignees): The top assignee in this domain collection is clearly Medtronic PLC via the patent documents with listed assignees of Covidien and Nellcor Puritan Bennett, and Masimo Corporation is the 2 nd ranked assignee. The 3 rd ranked assignee (listed 5 th in the Top Assignees table) is Philips N.V. , a multinational technology conglomerate headquartered in Amsterdam, Netherlands. The 4 th ranked assignee is Raydiant Oximetry, Inc. , a smaller private company headquartered in San Ramon, California that’s focused on noninvasive sensor technology for electronic fetal monitoring. The 5 th ranked assignee (listed 9 th in the Top Assignees table) is actually General Electric via its GE Healthcare division, which acquired Datex Ohmeda Inc. (the listed assignee in the Top Assignees table) via its acquisition of Instrumentarium Corporation . Other notable assignees in the top 10 include Baxter International , Zoll Medical Corporation , and Sotera, Inc. (Sotera Wireless Inc.) . For more information see the Top Assignees table and the complete list of 1,568 assignees.

  • Top Cited Patent Documents & Citation Assignees: The vast majority of the top cited patent documents in this domain collection belong to Masimo Corporation and reflect the fundmantal research and intellectual property development that the company has executed over the course of its evolution. The top 10 most cited patent documents date back to the late 1990s and early 2000s. The most cited patent document is granted patent US-6684090-B2 entitled “Pulse Oximetry Data Confidence Indicator” , which was granted to Masimo in January of 2004. This patent expired in February of 2020. Of the top 10 patent document citations, all were approved as granted patents and all have since expired as enforceable intellectual property. However, these patent documents, and all the others in the citations table, still serve as prior art references to new technology developments in this IP sector, so its generally a good idea for new technology developers to be at least somewhat familiar with these older patent document citations. See the Top 100 Patent Document Citations table for more information. When the top 100 patent document citations are sorted by assignee, Masimo obviously shows as the assignee with the most prominent citations portfolio. The only other assignee of note ranking in the top citations portfolio list is Sensidyne, Inc., which was acquired by Schauenburg Group in 2008 . See the Top Patent Document Citations, Sorted by Assignee table for more information. Also review the Top Non-Patent Literature Citations table for the top 100 citations from articles, research reports and media references.

  • Top Technology Classification Codes: The top inventive CPC technology classification codes for this domain collection focus on medical diagnostics, healthcare informatics, and sensor technology specifically designed for the body. The top CPC group code of A61B5 (“Diagnosis, Surgery, Identification – detecting, measuring, or recording for diagnostic purposes”) focuses on the medical diagnostics aspects and encompasses the physiological monitoring inventions involved in pulse oximetry. The CPC group number of G16H (“Healthcare Informatics, i.e. information and communication technology specifically adapted for the handling or processing of medical or healthcare data”) and its various sub-classifications group codes all encompass the healthcare informatics inventions and essentially represent unique techniques to process the collected pulse oximetry data. Finally, the A61M16 group code number (“Devices for Introducing Media Into, or Onto the Body”) represent the body sensor technology. See the Top Inventive CPC Group Code Numbers table for more information and the list of the top 250 CPC classification codes with descriptions searchable via keywords and phrases. It is also possible to use the Patent Documents Summary table to search on the applied CPC codes to find specific patent documents to which certain CPC codes have been applied.

  • Additional Domain Collection Queries:

    • Executing additional queries into the domain collection, via the Summary of All Patent Documents table, can often provide additional insight into sub-topics contained in the domain collection that may be of more specific interest. This can be accomplished by showing the relevant sections of the patent documents (title, abstract, or claims) or additional metadata fields, and executing additional keyword, key phrase, or parameter queries via the provided column search fields. Whenever switching between shown and hidden column fields, it’s important to clear the column field search box before hiding the field. Entering data into multiple column search fields will produce the ANDed results of those separate searches. So, if a field column is then hidden with a value or keyword in the search field box, that will still be applied in the ANDed search results. Also remember that the “Patent Claims Text” field is only available for US patent documents, not international patent documents, as supplied via Google’s BigQuery patent dataset. Below are some examples.

    • For example, say we’re interested in finding all patent documents with a filing date year of 2020 that also contains the word “fetal in the title of the document. With the fields shown as indicated below (green highlighted fields are show in the table), we can use the search fields above each column to execute an ANDed query into the table of patent documents. Entering the year “2020” in the “PatApp Filing Date” column search and “fetal into the “Patent Title” column search will show all patent documents matching both of those parameters. There are 12 matching results of which 5 are shown below. Of the 12 results, 10 are patent documents with Raydiant Oximetry Inc. as the assignee.

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    • In addition, say we’re interested in finding all patent documents that have the phrase “ear canal” in the abstract of the document. First, we show the “Patent Abstract Text” field and then enter the phrase “ear canal” (enclosed in quotes) as show below. This indicate that there are 16 patent documents that match this query, of which 5 are shown below.

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Table of Contents:

  • Summary of All Patent Documents in the Domain Collection

    • Provides an interactive, searchable, sort-able table of all patent documents in the analysis domain collection, including a variety of metadata fields pertaining to the documents. The titles, abstracts, and claims of the patent documents are also provided and can be further queried via the column-specific and overall search capabilities. This interactive table is useful in executing additional queries on the entire domain collection, such as keyword or key phrase queries on claims to find specific claims of interest, finding patent documents from specific inventors or assignees, or searching and sorting on various date fields such as filing date, grant date, or earliest priority date.

    • Duplicate patent documents, potentially filed with various international patenting authorities, have been deleted. So, there’s only one representative patent document per patent family.

    • Provides a table summarizing the date coverage, listing the earliest and most recent dates for filed patent applications, published documents, granted patents, and priority dates. This table provides some basic context to help profile the domain collection and summarizes the date ranges of documents included in the analysis.

  • Domain Collection Geographic Coverage

    • Provides a table summarizing the geographic distribution of patent applications and granted patents by country contained in the domain collection. This table is also provided to help profile the documents included in the analysis.

  • Patent Documents with English Sections by Country

    • Provides a table showing the geographic breakdown of the number patent documents with English abstracts, descriptions, and claims. This table is also designed to help profile the domain collection and provide context on the English-searchable sections of the patent documents from which semantic search results can be derived.

  • Patenting Trends Timeline for the Domain Collection

    • Provides timeline of the number of patent applications and granted patents, and thus shows a concise view of the historic patenting trends embodied in the domain collection. In addition, line charts show the timelines for the approval percentages and pendency periods. These charts can be used to assess the competitive nature of the patenting environment for the domain collection IP segment.

  • Top Inventors and Principal Assignees

    • Provides a table of the top inventors listed on the patent applications contained in the domain collection and essentially identifies the top intellectual property experts of the domain area profiled. This table also lists the entities (corporations, educational institutions, etc.) to which those inventors have assigned the predominant number of patent applications, and thus identifies relationships between inventors and those assignees.

  • Top Assignees

    • Provides a table of the top assignees of patent applications contained in the domain collection and largely represents the competitive landscape from an intellectual property perspective. These assignees are the corporations, educational institutions, individuals, and other entities, that are involved in the IP sector, and thus may also be prospective development partners, investors, IP acquirers, or IP acquisition targets.

    • This table can also be helpful in identifying entities that may be patent holding companies, otherwise know as non-practicing entities (NPEs). These companies typically acquire or develop IP portfolios and then employ licensing or litigation business models that can increase costs and risks for other companies competing in the IP sector.

    • Finally, a review of the companies in the lower quartiles of this list can also identify start-ups and emerging companies that are just beginning to established patent portfolios in the IP sector.

  • Top 100 Patent Document Citations

    • Provides a table of the top 100 most cited patent document references across the domain collection and is designed to identify the most significant patent documents to the domain area profiled.

    • A cited patent document is typically a patent application or granted patent that is considered as significant (prior art, or in some way relevant) to the patent document that cites it. This table below thus represents the list of most cited patent document references on patent documents in the domain collection. These cited patent documents may or may not be in the domain collection, but nonetheless represent notable references relevant to the domain collection.

  • Top Patent Document Citations, Sorted by Assignee

    • Provides a table with the same information as the previous Top Patent Document Citations table, except this table is sorted by assignee and is designed to identify the assignees with most significant intellectual property positions across the domain collection based on the total number of citations. This table aims to clearly show the corporations, educational institutions, individuals, or other entities that have broad positions in the IP sector profiled by the domain collection.

  • Top Non-Patent Literature Citations

    • Provides a table that identifies the most cited non-patent literature references across the domain collection and is designed to identify the most significant references beyond the patent document citations.

  • Top Inventive CPC Group Code Numbers

    • Provides a table of the top inventive CPC group codes and CPC group numbers (and respective CPC titles) that are assigned to patent documents included in the domain collection. This table essentially provides two levels of description into the inventive ideas embodied in the domain collection and is designed to provide some technological descriptive context to the patent documents of the IP segment profiled.


Summary of All Patent Documents in the Domain Collection
  • Provides an interactive, searchable, sort-able table of all patent documents in the analysis domain collection, including a variety of metadata fields pertaining to the documents. The titles, abstracts, and claims of the patent documents are also provided and can be further queried via the column-specific and overall search capabilities. This interactive table is useful in executing additional queries on the entire domain collection, such as keyword or key phrase queries on claims to find specific claims of interest, finding patent documents from specific inventors or assignees, or searching and sorting on various date fields such as filing date, grant date, or earliest priority date.
  • Click on any column heading to sort.
  • Use the Search box above any column to search specifically on that column.
  • Multiple concurrent column searches will produce results that are the logical AND'ed combination of the separate column searches.
  • Use the Search box at the top right to search across the entire table.
  • One or more keywords or key phrases can be entered in any search box. Key phrases must be contained in quotes ("…") to be considered a contiguous phrase. Keywords and key phrases must be separated by a single space within the search box. When multiple keywords or key phrases are entered into a search box, the text is searched for each keyword or phrase separately and only the items with text containing all keywords and phrases will be displayed
  • Use the Hide/Show control below to selectively display desired columns. Green highlighted column names are shown. Red highlighted column names are hidden. Clicking on a green highlighed column name will hide that column. Clicking on a red highlighted column name will show that column.
  • The patent document publication numbers ("Pat Pub Num Linked") are hyperlinked to the Google Patents page that shows the complete patent document.
  • Duplicate patent documents, potentially filed with various international patenting authorities, have been deleted. So, there’s only one representative patent document per patent family.


Index Publication Date Pat Pub Num Linked Pat Pub Num Google Link PatApp Filing Date Patent Grant Date Pendency Months of GrantedPatent Patent Priority Date Pat App Num Country Patent Country Code Patent Family ID Assignee Names Inventors Names Patent Kind Code Patent Application Kind Patent App Num Formatted Patent PCT Number Patent Title Patent Title Language Patent Abstract Text Patent Abstract Language Patent Claims Text Patent Claims Language IPC Class Codes CPC Class Codes



Date Coverage
  • This is a table summarizing the date coverage, listing the earliest and most recent dates for filed patent applications, published documents, granted patents, and priority dates. This table provides some basic context to help profile the domain collection and summarizes the date ranges of documents included in the analysis.
pulse_oximetry_v01_PLAR_20230727113135_DateCoverage.png

Geographic Coverage
  • Provides a table summarizing the geographic distribution of patent applications and granted patents by country contained in the domain collection. This table is also provided to help profile the documents included in the analysis.
  • Google's BigQuery 'patents.publications' data table contains full text information (titles, abstracts, descriptions, and claims) on US patent documents but only titles and abstracts on international patent documents. As of the date of this report, the BigQuery data table does not contain full text descriptions and claims for international patent documents. As a result, the geographic coverage insights can vary depending on the type of query that was used to generate the domain collection. Semantic keyword or key phrase matching queries that include international patent documents, only query and match those keywords and phrases across the titles and abstracts of those international documents. Thus, the results for semantic queries may be biased toward US patent documents.
  • Total number of patent applications = 2,515
  • Total number of granted patents = 1,250
  • Click on column headings to sort.
  • Use the Search box to search on any column.

IndexCountryCountry CodeNumber of Patent AppsNumber of Granted Patents
0 United States of America US 1,815 1,088
1 World Intellectual Property Organization (WIPO) WO 209 0
2 European Patent Office (EPO) EP 161 47
3 China, Peoples Republic of CN 105 45
4 Canada CA 58 27
5 Australia AU 42 15
6 United Kingdom GB 24 1
7 Taiwan TW 19 4
8 Japan JP 15 0
9 Russian Federation RU 13 13
10 South Korea KR 11 4
11 Israel IL 7 0
12 Germany DE 7 4
13 Mexico MX 4 0
14 Spain ES 4 2
15 China, Hong Kong S.A.R. HK 4 0
16 Greece GR 3 0
17 Philippines PH 2 0
18 Singapore SG 2 0
19 South Africa ZA 2 0
20 Hungary HU 1 0
21 Serbia RS 1 0
22 India IN 1 0
23 Bulgaria BG 1 0
24 Sweden SE 1 0
25 Brazil BR 1 0
26 Portugal PT 1 0
27 Poland PL 1 0

Geographic Breakdown of English Patent Document Sections
  • Provides a table showing the geographic breakdown of the number patent documents with English abstracts, descriptions, and claims. This table is also designed to help profile the domain collection and provide context on the English-searchable sections of the patent documents from which semantic search results can be derived.
  • This geographic breakdown of the available English sections of the domain collection patent documents is designed to show the extent to which semantic search queries and results may be limited due to the dataset limitations of Google’s BigQuery ‘patents.publications’ data table. The BigQuery ‘patents.publications’ data table contains full text information (titles, abstracts, descriptions, and claims) on US patent documents but only titles and abstracts on international patent documents. As of the date of this report, the BigQuery data table does not contain full text descriptions and claims for international patent documents.
  • Total number of patent documents with English abstracts = 3,415
  • Total number of patent documents with English descriptions = 2,609
  • Total number of patent documents with English claims = 2,609
  • Click on column headings to sort.
  • Use the Search box to search on any column.

IndexCountryCountry CodeNum Patent Docs English AbstractNum Patent Docs English DescNum Patent Docs English Claims
0 United States of America US 2,606 2,609 2,609
1 World Intellectual Property Organization (WIPO) WO 271 0 0
2 European Patent Office (EPO) EP 204 0 0
3 China, Peoples Republic of CN 121 0 0
4 Canada CA 80 0 0
5 Australia AU 28 0 0
6 Taiwan TW 20 0 0
7 United Kingdom GB 17 0 0
8 Japan JP 15 0 0
9 Russian Federation RU 13 0 0
10 Germany DE 11 0 0
11 South Korea KR 6 0 0
12 Spain ES 4 0 0
13 Mexico MX 4 0 0
14 Greece GR 3 0 0
15 Philippines PH 2 0 0
16 Sweden SE 2 0 0
17 Portugal PT 1 0 0
18 Singapore SG 1 0 0
19 Serbia RS 1 0 0
20 India IN 1 0 0
21 Bulgaria BG 1 0 0
22 Hungary HU 1 0 0
23 China, Hong Kong S.A.R. HK 1 0 0
24 Brazil BR 1 0 0

Patenting Trends of the Domain Collection
  • Shows a bar chart timeline of the number of patent applications and granted patents, and provides a concise view of the historic patenting trends embodied in the domain collection. In addition, line charts show the timelines for the approval percentages and pendency periods. These charts can be used to assess the competitive nature of the patenting environment for the domain collection IP segment.
  • More specifically, the bar chart shows the number of patent applications filed on an annual basis beginning with the earliest application in the domain collection and ending with the most recent filing in the domain collection.
  • The granted patent totals have been time-shifted so that the granted patents align with the corresponding applications and thus correctly reflect the granted patents resulting from the applications of a given year.
  • The pendency period line chart can be used to assess the validity of the data shown in the applications and granted patents bar chart as well as the approval percentages line chart. For example, with most patenting authorities, such as the USPTO, there is some delay in publishing patent applications and typically a longer time period between application and granted patent (pendency time). For the USPTO, most patent applications are published 18 months after the filing date and pendency times for granted patents can be 24 months or longer. This typically indicates that the most recent 18 to 24+ months of data reflects only partial results.
  • Note that the horizontal axis may not reflect a consecutive linear year progression if there were years where there was no patenting activity and no data exists.
  • If the domain collection represents a mix of international patent documents, note that these patent documents are often subject to varying examination and approval procedures of different worldwide patenting authorities, which can result in skewed data for the charts below. For example, patent documents from China, that utilize China's utility model patent process, can have notably shorter pendency periods, which can skew the pendency results shown below.




Top Inventors and the Principal Assignees
  • This table identifies the top inventors listed on the patent applications contained in the domain collection and essentially identifies the top intellectual property experts of the domain area profiled. This table also lists the entities (corporations, educational institutions, etc.) to which those inventors have assigned the predominant number of patent applications, and thus identifies relationships between inventors and those assignees.
  • The “Total Num of Patent Docs” column indicates the total number of patent applications on which the individual is listed as an inventor. The default sorting of the table is on this column in descending order.
  • The “Num of Patent Docs per Assignee” column indicates the number of patent applications, on which the individual is listed as an inventor, that have been assigned to the indicated assignee.
  • Click on column headings to sort.
  • Use the Search box to search on any column.

Index Inventor Name Total Num of Patent Docs Assignee Names Num of Patent Docs Per Assignee



Top Assignees
  • Provides a table of the top assignees of patent applications contained in the domain collection and largely represents the competitive landscape from an intellectual property perspective. These assignees are the corporations, educational institutions, individuals, and other entities, that are involved in the IP sector, and thus may also be prospective development partners, investors, IP acquirers, or IP acquisition targets.
  • This table can also be helpful in identifying entities that may be patent holding companies, otherwise know as non-practicing entities (NPEs). These companies typically acquire or develop IP portfolios and then employ licensing or litigation business models that can increase costs and risks for other companies competing in the IP sector.
  • Finally, a review of the companies in the lower quartiles of this list can also identify start-ups and emerging companies that are just beginning to established patent portfolios in the IP sector.
  • The “Total Num of Patent Docs per Assignee” column indicates the total number of applications that have been assigned to the indicated assignee.
  • Click on column headings to sort.
  • Use the Search box to search on any column.

Index Assignee Name Total Num of Patent Docs per Assignee



Top Patent Document Citations
  • Provides a table of the top 100 most cited patent document references across the domain collection and is designed to identify the most significant patent documents to the domain area profiled.
  • A cited patent document is typically a patent application or granted patent that is considered as significant (prior art, or in some way relevant) to the patent document that cites it. This table below thus represents the list of most cited patent document references on patent documents in the domain collection. These cited patent documents may or may not be in the domain collection, but nonetheless represent notable references relevant to the domain collection.
  • The “Number of Patent Docs” column indicates the number of times the citation was referenced across all applications in the domain collection.
  • Click on column headings to sort.
  • Use the Search box to search on any column.

IndexCitation Publication Num LinkedNumber of Patent DocsPublication DateCitation TitleAssignees
0 US-6684090-B2 292 2004-01-27 Pulse oximetry data confidence indicator Masimo Corporation
1 US-5482036-A 278 1996-01-09 Signal processing apparatus and method Masimo Corporation
2 US-6002952-A 277 1999-12-14 Signal processing apparatus and method Masimo Corporation
3 US-5758644-A 266 1998-06-02 Manual and automatic probe calibration Masimo Corporation
4 US-5632272-A 263 1997-05-27 Signal processing apparatus Masimo Corporation
5 US-6678543-B2 261 2004-01-13 Optical probe and positioning wrap Masimo Corporation
6 US-6011986-A 250 2000-01-04 Manual and automatic probe calibration Masimo Corporation
7 US-5490505-A 241 1996-02-13 Signal processing apparatus Masimo Corporation
8 US-5782757-A 238 1998-07-21 Low-noise optical probes Masimo Corporation
9 US-6397091-B2 232 2002-05-28 Manual and automatic probe calibration Masimo Corporation
10 US-6088607-A 231 2000-07-11 Low noise optical probe Masimo Corporation
11 US-5995855-A 228 1999-11-30 Pulse oximetry sensor adapter Masimo Corporation
12 US-6697658-B2 226 2004-02-24 Low power pulse oximeter Masimo Corporation
13 US-5431170-A 226 1995-07-11 Pulse responsive device Mathews; Geoffrey R.
14 US-6334065-B1 225 2001-12-25 Stereo pulse oximeter Masimo Corporation
15 US-5769785-A 224 1998-06-23 Signal processing apparatus and method Masimo Corporation
16 US-6606511-B1 224 2003-08-12 Pulse oximetry pulse indicator Masimo Corporation
17 US-6501975-B2 223 2002-12-31 Signal processing apparatus and method Masimo Corporation
18 US-6580086-B1 221 2003-06-17 Shielded optical probe and method Masimo Corporation
19 US-6699194-B1 220 2004-03-02 Signal processing apparatus and method Masimo Corporation
20 US-6263222-B1 220 2001-07-17 Signal processing apparatus Masimo Corporation
21 US-6996427-B2 219 2006-02-07 Pulse oximetry data confidence indicator Masimo Corporation
22 US-6067462-A 219 2000-05-23 Signal processing apparatus and method Masimo Corporation
23 US-6360114-B1 218 2002-03-19 Pulse oximeter probe-off detector Masimo Corporation
24 US-6377829-B1 217 2002-04-23 Resposable pulse oximetry sensor Masimo Corporation
25 US-6463311-B1 216 2002-10-08 Plethysmograph pulse recognition processor Masimo Corporation
26 US-6036642-A 213 2000-03-14 Signal processing apparatus and method Masimo Corporation
27 US-5685299-A 213 1997-11-11 Signal processing apparatus Masimo Corporation
28 US-6157850-A 212 2000-12-05 Signal processing apparatus Masimo Corporation
29 US-6993371-B2 211 2006-01-31 Pulse oximetry sensor adaptor Masimo Corporation
30 US-5337744-A 209 1994-08-16 Low noise finger cot probe Masimo Corporation
31 US-6206830-B1 209 2001-03-27 Signal processing apparatus and method Masimo Corporation
32 US-6654624-B2 209 2003-11-25 Pulse oximeter probe-off detector Masimo Corporation
33 US-6584336-B1 207 2003-06-24 Universal/upgrading pulse oximeter Masimo Corporation
34 US-5452717-A 206 1995-09-26 Finger-cot probe Masimo Corporation
35 US-6081735-A 205 2000-06-27 Signal processing apparatus Masimo Corporation
36 US-5860919-A 204 1999-01-19 Active pulse blood constituent monitoring method Masimo Corporation
37 US-5638818-A 203 1997-06-17 Low noise optical probe Masimo Corporation
38 US-6256523-B1 202 2001-07-03 Low-noise optical probes Masimo Corporation
39 US-6236872-B1 202 2001-05-22 Signal processing apparatus Masimo Corporation
40 US-6714804-B2 202 2004-03-30 Stereo pulse oximeter Masimo Corporation
41 US-6388240-B2 201 2002-05-14 Shielded optical probe and method having a longevity indication Masimo Corporation
42 US-6541756-B2 200 2003-04-01 Shielded optical probe having an electrical connector Masimo Corporation
43 US-6229856-B1 199 2001-05-08 Method and apparatus for demodulating signals in a pulse oximetry system Masimo Corporation
44 US-5919134-A 199 1999-07-06 Method and apparatus for demodulating signals in a pulse oximetry system Masimo Corp.
45 US-6658276-B2 196 2003-12-02 Pulse oximeter user interface Masimo Corporation
46 US-6371921-B1 196 2002-04-16 System and method of determining whether to recalibrate a blood pressure monitor Masimo Corporation
47 US-7027849-B2 196 2006-04-11 Blood parameter measurement system Masimo Laboratories, Inc.
48 US-6349228-B1 196 2002-02-19 Pulse oximetry sensor adapter Masimo Corporation
49 US-6650917-B2 195 2003-11-18 Signal processing apparatus Masimo Corporation
50 US-6525386-B1 195 2003-02-25 Non-protruding optoelectronic lens Masimo Corporation
51 US-5645440-A 194 1997-07-08 Patient cable connector Masimo Corporation
52 US-6542764-B1 194 2003-04-01 Pulse oximeter monitor for expressing the urgency of the patient's condition Masimo Corporation
53 US-6745060-B2 193 2004-06-01 Signal processing apparatus Masimo Corporation
54 US-6184521-B1 193 2001-02-06 Photodiode detector with integrated noise shielding Masimo Corporation
55 US-6725075-B2 192 2004-04-20 Resposable pulse oximetry sensor Masimo Corporation
56 US-6526300-B1 190 2003-02-25 Pulse oximeter probe-off detection system Masimo Corporation
57 US-6430525-B1 190 2002-08-06 Variable mode averager Masimo Corporation
58 US-5934925-A 190 1999-08-10 Patient cable connector Masimo Corporation
59 US-5823950-A 190 1998-10-20 Manual and automatic probe calibration Masimo Corporation
60 US-6470199-B1 189 2002-10-22 Elastic sock for positioning an optical probe Masimo Corporation
61 US-RE38492-E 189 2004-04-06 Signal processing apparatus and method Masimo Corporation
62 US-6770028-B1 189 2004-08-03 Dual-mode pulse oximeter Masimo Corporation
63 US-6697656-B1 188 2004-02-24 Pulse oximetry sensor compatible with multiple pulse oximetry systems Masimo Corporation
64 US-6515273-B2 188 2003-02-04 System for indicating the expiration of the useful operating life of a pulse oximetry sensor Masimo Corporation
65 US-6597933-B2 187 2003-07-22 Pulse oximetry sensor adapter Masimo Corporation
66 US-4964408-A 187 1990-10-23 Oximeter sensor assembly with integral cable Thor Technology Corporation
67 US-D393830-S 187 1998-04-28 Patient cable connector Masimo Corporation
68 US-6285896-B1 187 2001-09-04 Fetal pulse oximetry sensor Masimo Corporation
69 US-RE38476-E 187 2004-03-30 Signal processing apparatus Masimo Corporation
70 US-6280213-B1 186 2001-08-28 Patient cable connector Masimo Corporation
71 US-6152754-A 185 2000-11-28 Circuit board based cable connector Masimo Corporation
72 US-5940182-A 185 1999-08-17 Optical filter for spectroscopic measurement and method of producing the optical filter Masimo Corporation
73 US-5760910-A 184 1998-06-02 Optical filter for spectroscopic measurement and method of producing the optical filter Masimo Corporation
74 US-6850787-B2 184 2005-02-01 Signal component processor Masimo Laboratories, Inc.
75 US-7215984-B2 184 2007-05-08 Signal processing apparatus Masimo Corporation
76 US-5997343-A 183 1999-12-07 Patient cable sensor switch Masimo Corporation
77 US-4911167-A 183 1990-03-27 Method and apparatus for detecting optical pulses Nellcor Incorporated
78 US-5890929-A 183 1999-04-06 Shielded medical connector Masimo Corporation
79 US-6671531-B2 183 2003-12-30 Sensor wrap including foldable applicator Masimo Corporation
80 US-6278522-B1 183 2001-08-21 Optical filter for spectroscopic measurement and method of producing the optical filter Masimo Laboratories
81 US-6643530-B2 182 2003-11-04 Method and apparatus for demodulating signals in a pulse oximetry system Masimo Corporation
82 US-6813511-B2 181 2004-11-02 Low-noise optical probes for reducing ambient noise Masimo Corporation
83 US-6165005-A 180 2000-12-26 Patient cable sensor switch Masimo Corporation
84 US-6343224-B1 176 2002-01-29 Reusable pulse oximeter probe and disposable bandage apparatus Sensidyne, Inc.
85 US-6850788-B2 176 2005-02-01 Physiological measurement communications adapter Masimo Corporation
86 US-6792300-B1 176 2004-09-14 Low-noise optical probes for reducing light piping Masimo Corporation
87 US-6822564-B2 175 2004-11-23 Parallel measurement alarm processor Masimo Corporation
88 US-6816741-B2 175 2004-11-09 Plethysmograph pulse recognition processor Masimo Corporation
89 US-6950687-B2 175 2005-09-27 Isolation and communication element for a resposable pulse oximetry sensor Masimo Corporation
90 US-5069213-A 174 1991-12-03 Oximeter sensor assembly with integral cable and encoder Thor Technology Corporation
91 US-6760607-B2 174 2004-07-06 Ribbon cable substrate pulse oximetry sensor Masimo Corporation
92 US-6985764-B2 173 2006-01-10 Flex circuit shielded optical sensor Masimo Corporation
93 US-6684091-B2 173 2004-01-27 Reusable pulse oximeter probe and disposable bandage method Sensidyne, Inc.
94 US-6771994-B2 173 2004-08-03 Pulse oximeter probe-off detection system Masimo Corporation
95 US-5638816-A 170 1997-06-17 Active pulse blood constituent monitoring Masimo Corporation
96 US-6151516-A 170 2000-11-21 Active pulse blood constituent monitoring Masimo Laboratories
97 US-5494043-A 168 1996-02-27 Arterial sensor Vital Insite, Inc.
98 US-6321100-B1 167 2001-11-20 Reusable pulse oximeter probe with disposable liner Sensidyne, Inc.
99 US-6519487-B1 167 2003-02-11 Reusable pulse oximeter probe and disposable bandage apparatus Sensidyne, Inc.



Top Patent Document Citations, Sorted by Assignee
  • Provides a table with the same information as the previous Top Patent Document Citations table, except this table is sorted by assignee and is designed to identify the assignees with most significant intellectual property positions across the domain collection based on the total number of citations. This table aims to clearly show the corporations, educational institutions, individuals, or other entities that have broad positions in the IP sector profiled by the domain collection.
  • Like the previous table, the “Number of Patent Docs” column indicates the number of times the citation was referenced across all applications in the domain collection.
  • The “Tot Num of Patent Docs” column indicates the total number of patent application citations on an assignee basis. This number is computed by examining the citations per assignee and then summing the number of times those citations are referenced across the domain collection. The default sorting of the table ranks assignees in descending order of “Tot Num of Patent Docs” and thus provides an indication of the assignee’s intellectual property position in the domain area.
  • Click on column headings to sort.
  • Use the Search box to search on any column.

IndexCitation Publication Num LinkedNumber of Patent DocsPublication DateCitation TitleAssigneesTot Num of Patent Docs
0 US-6684090-B2 292 2004-01-27 Pulse oximetry data confidence indicator Masimo Corporation 17,614
1 US-5482036-A 278 1996-01-09 Signal processing apparatus and method Masimo Corporation 17,614
2 US-6002952-A 277 1999-12-14 Signal processing apparatus and method Masimo Corporation 17,614
3 US-5758644-A 266 1998-06-02 Manual and automatic probe calibration Masimo Corporation 17,614
4 US-5632272-A 263 1997-05-27 Signal processing apparatus Masimo Corporation 17,614
5 US-6678543-B2 261 2004-01-13 Optical probe and positioning wrap Masimo Corporation 17,614
6 US-6011986-A 250 2000-01-04 Manual and automatic probe calibration Masimo Corporation 17,614
7 US-5490505-A 241 1996-02-13 Signal processing apparatus Masimo Corporation 17,614
8 US-5782757-A 238 1998-07-21 Low-noise optical probes Masimo Corporation 17,614
9 US-6397091-B2 232 2002-05-28 Manual and automatic probe calibration Masimo Corporation 17,614
10 US-6088607-A 231 2000-07-11 Low noise optical probe Masimo Corporation 17,614
11 US-5995855-A 228 1999-11-30 Pulse oximetry sensor adapter Masimo Corporation 17,614
12 US-6697658-B2 226 2004-02-24 Low power pulse oximeter Masimo Corporation 17,614
13 US-6334065-B1 225 2001-12-25 Stereo pulse oximeter Masimo Corporation 17,614
14 US-5769785-A 224 1998-06-23 Signal processing apparatus and method Masimo Corporation 17,614
15 US-6606511-B1 224 2003-08-12 Pulse oximetry pulse indicator Masimo Corporation 17,614
16 US-6501975-B2 223 2002-12-31 Signal processing apparatus and method Masimo Corporation 17,614
17 US-6580086-B1 221 2003-06-17 Shielded optical probe and method Masimo Corporation 17,614
18 US-6699194-B1 220 2004-03-02 Signal processing apparatus and method Masimo Corporation 17,614
19 US-6263222-B1 220 2001-07-17 Signal processing apparatus Masimo Corporation 17,614
20 US-6996427-B2 219 2006-02-07 Pulse oximetry data confidence indicator Masimo Corporation 17,614
21 US-6067462-A 219 2000-05-23 Signal processing apparatus and method Masimo Corporation 17,614
22 US-6360114-B1 218 2002-03-19 Pulse oximeter probe-off detector Masimo Corporation 17,614
23 US-6377829-B1 217 2002-04-23 Resposable pulse oximetry sensor Masimo Corporation 17,614
24 US-6463311-B1 216 2002-10-08 Plethysmograph pulse recognition processor Masimo Corporation 17,614
25 US-6036642-A 213 2000-03-14 Signal processing apparatus and method Masimo Corporation 17,614
26 US-5685299-A 213 1997-11-11 Signal processing apparatus Masimo Corporation 17,614
27 US-6157850-A 212 2000-12-05 Signal processing apparatus Masimo Corporation 17,614
28 US-6993371-B2 211 2006-01-31 Pulse oximetry sensor adaptor Masimo Corporation 17,614
29 US-5337744-A 209 1994-08-16 Low noise finger cot probe Masimo Corporation 17,614
30 US-6206830-B1 209 2001-03-27 Signal processing apparatus and method Masimo Corporation 17,614
31 US-6654624-B2 209 2003-11-25 Pulse oximeter probe-off detector Masimo Corporation 17,614
32 US-6584336-B1 207 2003-06-24 Universal/upgrading pulse oximeter Masimo Corporation 17,614
33 US-5452717-A 206 1995-09-26 Finger-cot probe Masimo Corporation 17,614
34 US-6081735-A 205 2000-06-27 Signal processing apparatus Masimo Corporation 17,614
35 US-5860919-A 204 1999-01-19 Active pulse blood constituent monitoring method Masimo Corporation 17,614
36 US-5638818-A 203 1997-06-17 Low noise optical probe Masimo Corporation 17,614
37 US-6256523-B1 202 2001-07-03 Low-noise optical probes Masimo Corporation 17,614
38 US-6236872-B1 202 2001-05-22 Signal processing apparatus Masimo Corporation 17,614
39 US-6714804-B2 202 2004-03-30 Stereo pulse oximeter Masimo Corporation 17,614
40 US-6388240-B2 201 2002-05-14 Shielded optical probe and method having a longevity indication Masimo Corporation 17,614
41 US-6541756-B2 200 2003-04-01 Shielded optical probe having an electrical connector Masimo Corporation 17,614
42 US-6229856-B1 199 2001-05-08 Method and apparatus for demodulating signals in a pulse oximetry system Masimo Corporation 17,614
43 US-6658276-B2 196 2003-12-02 Pulse oximeter user interface Masimo Corporation 17,614
44 US-6371921-B1 196 2002-04-16 System and method of determining whether to recalibrate a blood pressure monitor Masimo Corporation 17,614
45 US-6349228-B1 196 2002-02-19 Pulse oximetry sensor adapter Masimo Corporation 17,614
46 US-6650917-B2 195 2003-11-18 Signal processing apparatus Masimo Corporation 17,614
47 US-6525386-B1 195 2003-02-25 Non-protruding optoelectronic lens Masimo Corporation 17,614
48 US-5645440-A 194 1997-07-08 Patient cable connector Masimo Corporation 17,614
49 US-6542764-B1 194 2003-04-01 Pulse oximeter monitor for expressing the urgency of the patient's condition Masimo Corporation 17,614
50 US-6745060-B2 193 2004-06-01 Signal processing apparatus Masimo Corporation 17,614
51 US-6184521-B1 193 2001-02-06 Photodiode detector with integrated noise shielding Masimo Corporation 17,614
52 US-6725075-B2 192 2004-04-20 Resposable pulse oximetry sensor Masimo Corporation 17,614
53 US-6526300-B1 190 2003-02-25 Pulse oximeter probe-off detection system Masimo Corporation 17,614
54 US-6430525-B1 190 2002-08-06 Variable mode averager Masimo Corporation 17,614
55 US-5934925-A 190 1999-08-10 Patient cable connector Masimo Corporation 17,614
56 US-5823950-A 190 1998-10-20 Manual and automatic probe calibration Masimo Corporation 17,614
57 US-6470199-B1 189 2002-10-22 Elastic sock for positioning an optical probe Masimo Corporation 17,614
58 US-RE38492-E 189 2004-04-06 Signal processing apparatus and method Masimo Corporation 17,614
59 US-6770028-B1 189 2004-08-03 Dual-mode pulse oximeter Masimo Corporation 17,614
60 US-6697656-B1 188 2004-02-24 Pulse oximetry sensor compatible with multiple pulse oximetry systems Masimo Corporation 17,614
61 US-6515273-B2 188 2003-02-04 System for indicating the expiration of the useful operating life of a pulse oximetry sensor Masimo Corporation 17,614
62 US-6597933-B2 187 2003-07-22 Pulse oximetry sensor adapter Masimo Corporation 17,614
63 US-D393830-S 187 1998-04-28 Patient cable connector Masimo Corporation 17,614
64 US-6285896-B1 187 2001-09-04 Fetal pulse oximetry sensor Masimo Corporation 17,614
65 US-RE38476-E 187 2004-03-30 Signal processing apparatus Masimo Corporation 17,614
66 US-6280213-B1 186 2001-08-28 Patient cable connector Masimo Corporation 17,614
67 US-6152754-A 185 2000-11-28 Circuit board based cable connector Masimo Corporation 17,614
68 US-5940182-A 185 1999-08-17 Optical filter for spectroscopic measurement and method of producing the optical filter Masimo Corporation 17,614
69 US-5760910-A 184 1998-06-02 Optical filter for spectroscopic measurement and method of producing the optical filter Masimo Corporation 17,614
70 US-7215984-B2 184 2007-05-08 Signal processing apparatus Masimo Corporation 17,614
71 US-5997343-A 183 1999-12-07 Patient cable sensor switch Masimo Corporation 17,614
72 US-5890929-A 183 1999-04-06 Shielded medical connector Masimo Corporation 17,614
73 US-6671531-B2 183 2003-12-30 Sensor wrap including foldable applicator Masimo Corporation 17,614
74 US-6643530-B2 182 2003-11-04 Method and apparatus for demodulating signals in a pulse oximetry system Masimo Corporation 17,614
75 US-6813511-B2 181 2004-11-02 Low-noise optical probes for reducing ambient noise Masimo Corporation 17,614
76 US-6165005-A 180 2000-12-26 Patient cable sensor switch Masimo Corporation 17,614
77 US-6850788-B2 176 2005-02-01 Physiological measurement communications adapter Masimo Corporation 17,614
78 US-6792300-B1 176 2004-09-14 Low-noise optical probes for reducing light piping Masimo Corporation 17,614
79 US-6822564-B2 175 2004-11-23 Parallel measurement alarm processor Masimo Corporation 17,614
80 US-6816741-B2 175 2004-11-09 Plethysmograph pulse recognition processor Masimo Corporation 17,614
81 US-6950687-B2 175 2005-09-27 Isolation and communication element for a resposable pulse oximetry sensor Masimo Corporation 17,614
82 US-6760607-B2 174 2004-07-06 Ribbon cable substrate pulse oximetry sensor Masimo Corporation 17,614
83 US-6985764-B2 173 2006-01-10 Flex circuit shielded optical sensor Masimo Corporation 17,614
84 US-6771994-B2 173 2004-08-03 Pulse oximeter probe-off detection system Masimo Corporation 17,614
85 US-5638816-A 170 1997-06-17 Active pulse blood constituent monitoring Masimo Corporation 17,614
86 US-6343224-B1 176 2002-01-29 Reusable pulse oximeter probe and disposable bandage apparatus Sensidyne, Inc. 683
87 US-6684091-B2 173 2004-01-27 Reusable pulse oximeter probe and disposable bandage method Sensidyne, Inc. 683
88 US-6321100-B1 167 2001-11-20 Reusable pulse oximeter probe with disposable liner Sensidyne, Inc. 683
89 US-6519487-B1 167 2003-02-11 Reusable pulse oximeter probe and disposable bandage apparatus Sensidyne, Inc. 683
90 US-7027849-B2 196 2006-04-11 Blood parameter measurement system Masimo Laboratories, Inc. 380
91 US-6850787-B2 184 2005-02-01 Signal component processor Masimo Laboratories, Inc. 380
92 US-4964408-A 187 1990-10-23 Oximeter sensor assembly with integral cable Thor Technology Corporation 361
93 US-5069213-A 174 1991-12-03 Oximeter sensor assembly with integral cable and encoder Thor Technology Corporation 361
94 US-6278522-B1 183 2001-08-21 Optical filter for spectroscopic measurement and method of producing the optical filter Masimo Laboratories 353
95 US-6151516-A 170 2000-11-21 Active pulse blood constituent monitoring Masimo Laboratories 353
96 US-5431170-A 226 1995-07-11 Pulse responsive device Mathews; Geoffrey R. 226
97 US-5919134-A 199 1999-07-06 Method and apparatus for demodulating signals in a pulse oximetry system Masimo Corp. 199
98 US-4911167-A 183 1990-03-27 Method and apparatus for detecting optical pulses Nellcor Incorporated 183
99 US-5494043-A 168 1996-02-27 Arterial sensor Vital Insite, Inc. 168



Top Non-Patent Literature Citations
  • Provides a table that identifies the most cited non-patent literature references across the domain collection and is designed to identify the most significant references beyond the patent document citations.
  • The “Number of Patent Docs” column indicates the number of times the non-patent literature citation was referenced across all applications in the domain collection.
  • Click on column headings to sort.
  • Use the Search box to search on any column.

IndexCitation NPL TextNumber of Patent Docs
0 Maletras, Francois-Xavier, et al.; "Construction and calibration of a new design of Fiber Optic Respiratory Plethysmograph (FORP)," Optomechanical Design and Engineering, Proceedings of SPIE, vol. 4444, pp. 285-293 (2001). 91
1 East, Christine E., et al.; "Fetal Oxygen Saturation and Uterine Contractions During Labor," American Journal of Perinatology, vol. 15, No. 6, pp. 345-349 (Jun. 1998). 76
2 Goldman, Julian M.; "Masimo Signal Extraction Pulse Oximetry," Journal of Clinical Monitoring and Computing, vol. 16, pp. 475-483 (2000). 73
3 Belal, Suliman Yousef, et al.; "A fuzzy system for detecting distorted plethysmogram pulses in neonates and paediatric patients," Physiol. Meas., vol. 22, pp. 397-412 (2001). 73
4 Todd, Bryan, et al.; "The Identification of Peaks in Physiological Signals," Computers and Biomedical Research, vol. 32, pp. 322-335 (1999). 72
5 Kaestle, S.; "Determining Artefact Sensitivity of New Pulse Oximeters in Laboratory Using Signals Obtained from Patient," Biomedizinische Technik, vol. 45 (2000). 71
6 Stetson, Paul F.; "Determining Heart Rate from Noisey Pulse Oximeter Signals Using Fuzzy Logic," The IEEE International Conference on Fuzzy Systems, St. Louis, Missouri, May 25-28, 2003; pp. 1053-1058. 70
7 Cysewska-Sobusaik, Anna; "Metrological Problems With noninvasive Transillumination of Living Tissues," Proceedings of SPIE, vol. 4515, pp. 15-24 (2001). 70
8 Chan, K.W., et al.; "17.3: Adaptive Reduction of Motion Artifact from Photoplethysmographic Recordings using a Variable Step-Size LMS Filter," IEEE, pp. 1343-1346 (2002). 70
9 Barreto, Armando B., et al.; "Adaptive LMS Delay Measurement in dual Blood Volume Pulse Signals for Non-Invasive Monitoring," IEEE, pp. 117-120 (1997). 70
10 Such, Hans Olaf; "Optoelectronic Non-invasive Vascular Diagnostics Using multiple Wavelength and Imaging Approach," Dissertation, (1998). 70
11 Coetzee, Frans M.; "Noise-Resistant Pulse Oximetry Using a Synthetic Reference Signal," IEEE Transactions on Biomedical Engineering, vol. 47, No. 8, Aug. 2000, pp. 1018-1026. 69
12 Cyrill, D., et al.; "Adaptive Comb Filter for Quasi-Periodic Physiologic Signals," Proceedings of the 25th Annual International Conference of the IEEE EMBS, Cancun, Mexico, Sep. 17-21, 2003; pp. 2439-2442. 69
13 Barnum, P.T., et al.; "Novel Pulse Oximetry Technology Capable of Reliable Bradycardia Monitoring in the Neonate," Respiratory Care, vol. 42, No. 1, p. 1072 (Nov. 1997). 68
14 Leahy, Martin J., et al.; "Sensor Validation in Biomedical Applications," IFAC Modelling and Control in Biomedical Systems, Warwick, UK; pp. 221-226 (1997). 67
15 Relente, A.R., et al.; "Characterization and Adaptive Filtering of Motion Artifacts in Pulse Oximetry using Accelerometers," Proceedings of the Second joint EMBS/BMES Conference, Houston, Texas, Oct. 23-26, 2002; pp. 1769-1770. 66
16 Earthrowl-Gould, T., et al.; "Chest and abdominal surface motion measurement for continuous monitoring of respiratory function," Proc. Instn Mech Engrs, V215, Part H; pp. 515-520 (2001). 65
17 Rhee, Sokwoo, et al.; "Artifact-Resistant, Power-Efficient Design of Finger-Ring Plethysmographic Sensor," IEEE Transactions on Biomedical Engineering, vol. 48, No. 7, pp. 795-805 (Jul. 2001). 63
18 Yang, Boo-Ho, et al.; "Development of the ring sensor for healthcare automation," Robotics and Autonomous Systems, vol. 30, pp. 273-281 (2000). 61
19 Addison, Paul S., et al.; "A novel time-frequency-based 3D Lissajous figure method and its application to the determination of oxygen saturation from the photoplethysmogram," Institute of Physic Publishing, Meas. Sci. Technol., vol. 15, pp. L15-L18 (2004). 61
20 Aoyagi, T., et al.; "Analysis of Motion Artifacts in Pulse Oximetry," Japanese Society ME, vol. 42, p. 20 (1993) (Article in Japanese-contains English summary of article). 61
21 Ferrell, T.L., et al.; "Medical Telesensors," SPIE, vol. 3253, pp. 193-198 (1998). 61
22 Shaltis, Phillip, et al.; "Implementation and Validation of a Power-Efficient, High-Speed Modulation Design for Wireless Oxygen Saturation Measurement Systems," IEEE, pp. 193-194 (2002). 61
23 Vincente, L.M., et al.; "Adaptive Pre-Processing of Photoplethysmographic Blood Volume Pulse Measurements," pp. 114-117 (1996). 60
24 Nilsson, Lena, et al.; "Monitoring of Respiratory Rate in Postoperative Care Using a New Photoplethysmographic Technique," Journal of Clinical Monitoring and Computing, vol. 16, pp. 309-315 (2000). 60
25 Lutter, N., et al.; "Comparison of Different Evaluation Methods for a Multi-wavelength Pulse Oximeter," Biomedizinische Technik, vol. 43, (1998). 59
26 "Smaller Product, Tighter Tolerances Pose Dispensing Challenges for Medical Device Manufacturer," Adhesives Age, pp. 40-41 (Oct. 1997). 58
27 Plummer, John L., et al.; "Identification of Movement Artifact by the Nellcor N-200 and N-3000 Pulse Oximeters," Journal of clinical Monitoring, vol. 13, pp. 109-113 (1997). 58
28 Yang, Boo-Ho, et al.; "A Twenty-Four Hour Tele-Nursing System Using a Ring Sensor," Proceedings of the 1998 IEEE International Conference on Robotics & Automation, Leaven, Belgium, May 1998; pp. 387-392. 57
29 Schulz, Christian Eric; "Design of a Pulse Oximetry Sensor Housing Assembly," California State University Master's Thesis, UMI Dissertation Services, UMI No. 1401306, (May 2000) 63 pages. 57
30 Gostt, R., et al.; "Pulse Oximetry Artifact Recognition Algorithm for Computerized Anaesthetic Records," Journal of Clinical Monitoring and Computing Abstracts, p. 471 (2002). 56
31 Crilly, Paul B., et al.; "An Integrated Pulse Oximeter System for Telemedicine Applications," IEEE Instrumentation and Measurement Technology Conference, Ottawa, Canada; May 19-21, 1997; pp. 102-104. 56
32 Faisst, Karin, et al.; "Intrapartum Reflectance Pulse Oximetry: Effects of Sensor Location and Fixation Duration on Oxygen Saturation Readings," Journal of Clinical Monitoring, vol. 13, pp. 299-302 (1997). 56
33 Warren, Steve, et al.; "Wearable Sensors and Component-Based Design for Home Health Care," Proceedings of the Second Joint EMBS/BMES Conference, Houston, Texas; Oct. 23-26, 2002; pp. 1871-1872. 56
34 Lee, C.M., et al.; "Reduction of motion artifacts from photoplethysmographic recordings using wavelet denoising approach," IEEE EMBS Asian-Pacific Conference on Biomedical Engineering, Oct. 20-22, 2003; pp. 194-195. 56
35 Hayes, Matthew J., et al.; "Quantitative evaluation of photoplethysmographic artifact reduction for pulse oximetry," SPIE, vol. 3570, pp. 138-147 (Sep. 1998). 56
36 Izumi, Akio, et al.; "Accuracy and Utility of a New Reflectance Pulse Oximeter for Fetal Monitoring During Labor," Journal of Clinical Monitoring, vol. 13, pp. 103-108 (1997). 55
37 Irie, A., et al.; "Respiration Monitors-Pulse Oximeters," Neonatal Care, vol. 15, No. 12, pp. 78-83 (2002) (Article in Japanese-contains English summary of article). 55
38 Hayes, Matthew J., et al.; "Artifact reduction in photoplethysmography," Applied Optics, vol. 37, No. 31, pp. 7437-7446 (Nov. 1998). 55
39 Aoyagi, Takuo; "Pulse oximetry: its invention, theory, and future," Journal of Anesthesia, vol. 17, pp. 259-266 (2003). 55
40 Kaestle, S.; "An Algorithm for Reliable Processing of Pulse Oximetry Signals Under strong Noise Conditions," Dissertation Book, Lubeck University, Germany (1999). 54
41 Poets, C. F., et al.; "Detection of movement artifact in recorded pulse oximeter saturation," Eur. J. Pediatr.; vol. 156, pp. 808-811 (1997). 54
42 Lutter, N., et al.; "Accuracy of Noninvasive Continuous Blood Pressure; Measurement Utilising the Pulse Transit Time," Journal of clinical Monitoring and Computing, vol. 17, Nos. 7-8, pp. 469 (2002). 54
43 Hayes, Matthew J., et al.; "A New Method for Pulse Oximetry Possessing Inherent Insensitivity to Artifact," IEEE Transactions on Biomedical Engineering, vol. 48, No. 4, pp. 452-461 (Apr. 2001). 53
44 Gehring, Harmut, et al.; "The Effects of Motion Artifact and Low Perfusion on the Performance of a New Generation of Pulse Oximeters in Volunteers Undergoing Hypoxemia," Respiratory Care, Vo. 47, No. 1, pp. 48-60 (Jan. 2002). 53
45 Jopling, Michae W., et al.; "Issues in the Laboratory Evaluation of Pulse Oximeter Performance," Anesth Analg, vol. 94, pp. S62-S68 (2002). 53
46 Yao, Jianchu, et al.; "Design of a Plug-and-Play Pulse Oximeter," Proceedings of the Second Joint EMBS/BMES Conference, Houston, Texas, Oct. 23-26, 2002; pp. 1752-1753. 53
47 Rhee, Sokwoo, et al.; "Artifact-Resistant, Power-Efficient Design of Finger-Ring Plethysmographic Sensor-Part I: Design and Analysis," Proceedings of the 22nd Annual EMBS International Conference, Chicago, Illinois; Jul. 23-28, 2000; pp. 2792-2795. 53
48 Yamaya, Yoshiki, et al.; "Validity of pulse oximetry during maximal exercise in normoxia, hypoxia, and hyperoxia," J. Appl. Physiol., vol. 92, pp. 162-168 (2002). 52
49 Liu, Ying, et al.; "Sensor design of new type reflectance pulse oximetry," Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, Proceedings of SPIE, vol. 4916, pp. 98-102 (2002). 52
50 Buschman, J.P., et al.; "Principles and Problems of Calibration of Fetal Oximeters," Biomedizinische Technik, vol. 42, pp. 265-266 (1997). 52
51 Urquhart, C., et al.; "Ear probe pulse oximeters and neonates," Anaesthesia, vol. 60, p. 294 (2005). 51
52 Aoyagi, T., et al.; "Pulse Oximeters: background, present and future," Neonatal Care, vol. 13, No. 7, pp. 21-27 (2000) (Article in Japanese-contains English summary of article). 50
53 Rhee, Sokwoo, et al.; "Design of a Artifact-Free Wearable Plethysmographic Sensor," Proceedings of the First joint BMES/EMBS Conference, Oct. 13-16, 1999, Altanta, Georgia, p. 786. 50
54 Barreto, A.B., et al.; "Adaptive Cancelation of Motion artifact in Photoplethysmographic Blood Volume Pulse Measurements for Exercise Evaluation," IEEE-EMBC and CMBEC-Theme 4: Signal Processing, pp. 983-984 (1995). 50
55 Ikeda, Kenji, et al.; "Improvement of Photo-Electric Plethysmograph Applying Newly Developed Opto-Electronic Devices," IEEE Tencon, pp. 1109-1112 (1999). 50
56 Cubeddu, Rinaldo, et al.; "Portable 8-channel time-resolved optical imager for functional studies of biological tissues," Photon Migration, Optical Coherence Tomography, and Microscopy, Proceedings of SPIE, vol. 4431, pp. 260-265 (2001). 50
57 Spigulis, Janis, et al.; "Optical multi-channel sensing of skin blood pulsations," Optical Sensing, Proceedings of SPIE, vol. 5459, pp. 46-53 (2004). 50
58 Matsui, A., et al.; "Pulse Oximeter," Neonatal Care, vol. 16, No. 3, pp. 38-45 (2003) (Article in Japanese-contains English summary of article). 50
59 Gisiger, P.A., et al.; "OxiCarbo®, a single sensor for the non-invasive measurement of arterial oxygen saturation and CO2 partial pressure at the ear lobe," Sensor and Actuators, vol. B-76, pp. 527-530 (2001). 49
60 Lutter, Norbert O., et al.; "False Alarm Rates of Three Third-Generation Pulse Oximeters in PACU, ICU and IABP Patients," Anesth Analg, vol. 94, pp. S69-S75 (2002). 49
61 Pickett, John, et al.; "Pulse Oximetry and PPG Measurements in Plastic Surgery," Proceedings-19th International Conference-IEEE/EMBS, Chicago, Illinois, Oct. 30-Nov. 2, 1997, pp. 2330-2332. 48
62 Kyriacou, Panayiotis A., et al.; "Esophageal Pulse Oximetry Utilizing Reflectance Photoplethysmography," IEEE Transactions on Biomedical Engineering, vol. 49, No. 11, pp. 1360-1368 (Nov. 2002). 48
63 Nakagawa, M., et al.; "Oxygen Saturation Monitor," Neonatal Monitoring, vol. 26, No. 5, pp. 536-539 (2003) (Article in Japanese-contains English summary of article). 47
64 Nijland, Mark J.M., et al.; "Assessment of fetal scalp oxygen saturation determination in the sheep by transmission pulse oximetry," Am. J. Obstet Gynecol., vol. 183, No. 6, pp. 1549-1553 (Dec. 2000). 47
65 Avidan, A.; "Pulse oximeter ear probe," Anaesthesia, vol. 58, pp. 726 (2003). 46
66 Mannheimer, Paul D., et al.; "Wavelength Selection for Low-Saturation Pulse Oximetry," IEEE Transactions on Biomedical Engineering, vol. 44, No. 3, pp. 148-158 (Mar. 1997). 46
67 Gosney, S., et al.; "An alternative position for the pulse oximeter probe," Anaesthesia, vol. 56, p. 493 (2001). 46
68 Nijland, Roel, et al.; "Validation of Reflectance Pulse Oximetry: An Evaluation of a new Sensor in Piglets," Journal of Clinical Monitoring, vol. 13, pp. 43-49 (1997). 46
69 Soto, Denise A.; "A Comparative Study of Pulse Oximeter Measurements: Digit Versus Earlobe," Master of Science Thesis, California State University Dominguez Hills, May 1997, 46 pgs. 46
70 König, Volker, et al.; "Reflectance Pulse Oximetry-Principles and Obstetric Application in the Zurich System," Journal of Clinical Monitoring and Computing, vol. 14, pp. 403-412 (1998). 45
71 Matthews, Nora S. et al.; "An evaluation of pulse oximeters in dogs, cats and horses," Veterinary Anaesthesia and Analgesia, vol. 30, pp. 3-14 (2003). 45
72 Johnston, W.S., et al.; "Extracting Breathing Rate Infromation from a Wearable Reflectance Pulse Oximeter Sensor," Proceedings of the 26th Annual International conference of the IEEE EMBS, San Francisco, California; Sep. 1-5, 2004; pp. 5388-5391. 45
73 Yan, Yong-sheng, et al.; "Reduction of motion artifact in pulse oximetry by smoothed pseudo Wigner-Ville distribution," Journal of NeuroEngineering and Rehabilitation, vol. 2, No. 3 (9 pages) (Mar. 2005). 45
74 Koga, I., et al.; "Sigmoid colonic reflectance pulse oximetry and tonometry in a porcine experimental hypoperfusion shock model," Acta Anaesthesiol Scand, vol. 46, pp. 1212-1216 (2002). 44
75 Masin, Donald I., et al.; "Fetal Transmission Pulse Oximetry," Proceedings 19th International Conference IEEE/EMBS, Oct. 30-Nov. 2, 1997; pp. 2326-2329. 43
76 Seelbach-Göbel, Birgit, et al.; "The prediction of fetal acidosis by means of intrapartum fetal pulse oximetry," Am J. Obstet. Gynecol., vol. 180, No. 1, Part 1, pp. 73-81 (1999). 43
77 Hase, Kentaro, et al.; "Continuous Measurement of Blood Oxygen Pressure Using a Fiber Optic Sensor Based on Phosphorescense Quenching," Proceedings of the Second Joint EMBS/BMES Conference, Houston, Texas; Oct. 23-26, 2002, pp. 1777-1778. 43
78 Rhee, Sokwoo, et al.; "The Ring Sensor: a New Ambulatory Wearable Sensor for Twenty-Four Hour Patient Monitoring," Proceedings of the 20th annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 20, No. 4, pp. 1906-1909 (Oct. 1998). 43
79 Pujary, C., et al.; "Photodetector Size Considerations in the Design of a Noninvasive Reflectance Pulse Oximeter for Telemedicine Applications," IEEE, pp. 148-149 (2003). 43
80 Mendelson, Y., et al.; "Measurement Site and Photodetector Size Considerations in Optimizing Power Consumption of a Wearable Reflectance Pulse Oximeter," Proceedings of the 25th Annual International conference of the IEEE EMBS, Cancun, Mexico, Sep. 17-21, 2003; pp. 3016-3019. 43
81 Vicenzi, Martin N.; "Transesophageal versus surface pulse oximetry in intensive care unit patients," Crit. Care Med.; vol. 28, No. 7, pp. 2268-2270 (2000). 43
82 Block, Frank E., Jr., et al.; "Technology evaluation report: Obtaining pulse oximeter signals when the usual probe cannot be used," International journal of clinical Monitoring and Computing, vol. 14, pp. 23-28 (1997). 43
83 Itoh, K., et al.; "Pulse Oximeter," Toyaku Zasshi (Toyaku Journal), vol. 25, No. 8, pp. 50-54 (2003) (Article in Japanese-contains English summary of article). 42
84 DeKock, Marc; "Pulse Oximetry Probe Adhesive Disks: a Potential for Infant Aspiration," Anesthesiology, vol. 89, pp. 1603-1604 (1998). 42
85 Hamilton, Patrick S., et al.; "Effect of Adaptive Motion-Artifact Reduction on QRS Detection," Biomedical Instrumentation & Technology, pp. 197-202 (undated). 42
86 A. Johansson; "Neural network for photoplethysmographic respiratory rate monitoring," Medical & Biological Engineering & Computing, vol. 41, pp. 242-248 (2003). 42
87 Nogawa, Masamichi, et al.; "A Novel Hybrid Reflectance Pulse Oximater Sensor with improved Linearity and General Applicability to Various Portions of the Body," Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 20, No. 4, pp. 1858-1861 (1998). 41
88 Lebak, J.W., et al.; "Implementation of a Standards-Based Pulse Oximeter on a Wearable, Embedded Platform," Proceeding of the 25th Annual International Conference of the IEEE EMBS, Cancun, Mexico, Sep. 17-21, 2003; pp. 3196-3198. 41
89 Tobata, H., et al.; "Study of Ambient Light Affecting Pulse Oximeter Probes," Ikigaku (Medical Technology), vol. 71, No. 10, pp. 475-476 (2002) (Article in Japanese-contains English summary of article). 41
90 Kyriacou, P. A., et al.; "Investication of oesophageal photoplethysmographic signals and blood oxygen saturation measurements in cardiothoracic surgery patients," Physiological Measurement, vol. 23, No. 3, pp. 533-545 (Aug. 2002). 41
91 Wendelken, Suzanne, et al.; "The Feasibility of Using a Forehead Reflectance Pulse Oximeter for Automated Remote Triage," IEEE, pp. 180-181 (2004). 41
92 Ericson, M.N., et al.; "In vivo application of a minimally invasive oximetry based perfusion sensor," Proceedings of the Second Joint EMBS/BMES Conference, Houston, Texas; Oct. 23-26, 2002, pp. 1789-1790. 41
93 Rohling, Roman, et al.; "Clinical Investigation of a New Combined Pulse Oximetry and Carbon Dioxide Tension Sensor in Adult Anaesthesia," Journal o Clinical Monitoring and Computing, vol. 15; pp. 23-27 (1999). 41
94 Rhee, Sokwoo, et al.; "Artifact-Resistant, Power-Efficient Design of Finger-Ring Plethysmographic Sensor-Part II: Prototyping and Benchmarking," Proceedings of the 22nd Annual EMBS International Conference, Chicago, Illinois; Jul. 23-28, 2000; pp. 2796-2799. 40
95 Crespi, F., et al.; "Near infrared oxymeter prototype for non-invasive analysis of rat brain oxygenation," Optical Sensing, Proceedings of SPIE, vol. 5459, pp. 38-45 (2004). 40
96 Matsuzawa, Y., et al.; "Pulse Oximeter," Home Care Medicine, pp. 42-45 (Jul. 2004); (Article in Japanese—contains English summary of article). 40
97 Branche, Paul C., et al.; "Measurement Reproducibility and Sensor Placement Considerations in Designing a Wearable Pulse Oximeter for Military Applications," 2 pgs. (2004). 39
98 Johnston, William S., et al.; "Effects of Motion Artifacts on helmet-Mounted Pulse Oximeter Sensors," 2 pgs. (2004). 39
99 Edrich, Thomas, et al.; "Can the Blood Content of the Tissues be Determined Optically During Pulse Oximetry Without Knowledge of the Oxygen Saturation?-An In-Vitro Investigation," Proceedings of the 20th Annual International conference of the IEEE Engineering in Medicine and Biology Society, vol. 20, No. 6, pp. 3072-3075 (1998). 39



Top Inventive CPC Group Code Numbers
  • Provides a table of the top inventive CPC group codes and CPC group numbers (and respective CPC titles) that are assigned to patent documents included in the domain collection. This table essentially provides two levels of description into the inventive ideas embodied in the domain collection and is designed to provide some technological descriptive context to the patent documents of the IP segment profiled.
  • The CPC group code is shown as the first four alphanumberic characters of the "CPC Group Code Number" field. This represents a macro-level description of the inventive ideas. The CPC group number is represented as the numeric digits following the group code and represents an additional level of detail. Thus the "CPC Group Title" and "CPC Group Number Title" together provide two levels of description of the inventive technologies used in patent documents across the domain collection.
  • The “Percent of Top 250 Group Numbers” column indicates the concentration of the inventive ideas in the designated CPC group number across the top 250 group numbers in the domain collection. Patent documents can be assigned multiple CPC codes representing potentially different inventive ideas embodied in the document.
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Index CPC Group Code Number Percent of Top 250 Group Numbers CPC Group Title CPC Group Number Title





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