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

Stephen E. Dourson

General Motors: 5 patents #3,082 of 18,328Top 20%
Delphi Technologies: 1 patents #2,130 of 4,124Top 55%
Dayton, OH: #301 of 1,892 inventorsTop 20%
Ohio: #13,499 of 73,341 inventorsTop 20%
Overall (All Time): #876,348 of 4,157,543Top 25%
6 Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7143684 Hydraulic actuator having disc valve assembly Scott Alan Stacey, Vincent Pichon 2006-12-05
5195619 Internal accumulator for a hydraulic damper Wayne V. Fannin 1993-03-23
5163538 Low level damping valve and method for a semi-active hydraulic damper Randall L. Derr, Chris Keller, William S. Morgan 1992-11-17
5142295 Power antenna with compact direct drive system 1992-08-25
5070971 Molded piston for a hydraulic damper Gary Lee Johnston, Kurt E. Olson 1991-12-10
5070972 Vortex valving assembly for a hydraulic damper Gary Lee Johnston 1991-12-10