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

Don Barker — 3 Patents

ASAccent Color Sciences: 1 patents #2 of 11Top 20%
EGEsco Group: 1 patents #72 of 186Top 40%
Portland, OR: #3,756 of 9,213 inventorsTop 45%
Oregon: #10,188 of 28,073 inventorsTop 40%
Overall (All Time): #1,411,853 of 4,157,543Top 35%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11294051 Ultrasonic measurement device Brett Barker, Elik Dvorkin 2022-04-05
5793397 Printer assembly John C. Hamma, John J. Mercede, Jr., Mike Raymond, Norman L. Milliard 1998-08-11
4640496 Dump block for dragline bucket Robert L. Van Hoomissen, Terry L. Briscoe 1987-02-03