Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Sandra Marshall — 6 Patents

EYEyetracking: 5 patents #1 of 2Top 50%
San Diego, CA: #6,452 of 23,606 inventorsTop 30%
California: #94,478 of 386,348 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Sandra Marshall has been granted 6 US patents while listed as an inventor at Eyetracking. The first was granted in 2000 and the most recent in April 2022. Sandra Marshall ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Sandra Marshall in San Diego, CA, US.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
11291768 Detecting depth of anesthesia via pupil metrics James J. Weatherhead 2022-04-05
10391243 Detecting depth of anesthesia via pupil metrics James J. Weatherhead 2019-08-27
7438418 Mental alertness and mental proficiency level determination 2008-10-21
7344251 Mental alertness level determination 2008-03-18
6572562 Methods for monitoring affective brain function 2003-06-03
6090051 Method and apparatus for eye tracking and monitoring pupil dilation to evaluate cognitive activity 2000-07-18