Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David P. Sheriff — 2 Patents

UIUnit Instruments: 2 patents #5 of 15Top 35%
Villa Park, CA: #112 of 309 inventorsTop 40%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
David P. Sheriff has been granted 2 US patents while listed as an inventor at Unit Instruments. All of these patents were granted in 2002. David P. Sheriff ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David P. Sheriff in Villa Park, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6425281 Pressure insensitive gas control system Chiun Wang 2002-07-30
6374859 Manifold system for enabling a distribution of fluids Kim Ngoc Vu, Eric J. Redemann 2002-04-23