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

David A. Ashman — 2 Patents

HAHach: 1 patents #109 of 214Top 55%
Portland, OR: #4,612 of 9,213 inventorsTop 55%
Oregon: #12,654 of 28,073 inventorsTop 50%
Overall (All Time): #1,846,724 of 4,157,543Top 45%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11352002 Automated pedal sensor profile for speed control Steven Brian Shenker, Chris Thompson, Shawn G. Inks 2022-06-07
9116060 Auto-zeroing absolute pressure sensor Timothy Higgins, Lawrence B. Marsh 2015-08-25