Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Douglas F. Rayner — 1 Patent

Nec: 1 patents #7,889 of 14,502Top 55%
San Francisco, CA: #18,903 of 26,999 inventorsTop 75%
California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #3,385,295 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7216232 Method and device for inserting and authenticating a digital signature in digital data Ingemar J. Cox, Matthew L. Miller 2007-05-08