Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Lee R. Mason — 3 Patents

PHPhysio-Control: 3 patents #123 of 303Top 45%
Issaquah, WA: #733 of 1,767 inventorsTop 45%
Washington: #28,186 of 76,902 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Lee R. Mason has been granted 3 US patents while listed as an inventor at Physio-Control. The first was granted in 1989 and the most recent in January 1990. Lee R. Mason ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Lee R. Mason in Issaquah, WA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4892101 Method and apparatus for offsetting baseline portion of oximeter signal Peter W. Cheung, Karl F. Gauglitz, Stephen J. Prosser, Robert E. Smith, III, Darrell Wagner +1 more 1990-01-09
4869253 Method and apparatus for indicating perfusion and oxygen saturation trends in oximetry Kenneth C. Craig, Jr., Karl F. Gauglitz, G. Michael Losh, Richard C. Nova, James W. Taylor +1 more 1989-09-26
4819646 Feedback-controlled method and apparatus for processing signals used in oximetry Peter W. Cheung, Karl F. Gauglitz, Stephen J. Prosser, Robert E. Smith, III, Darrell Wagner +1 more 1989-04-11