Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DH

Donald E. Humphry

NASA: 1 patents #1,418 of 3,881Top 40%
Cupertino, CA: #5,025 of 6,989 inventorsTop 75%
California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,020,650 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4538066 Modulated voltage metastable ionization detector Glenn C. Carle, Daniel R. Kojiro 1985-08-27