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

Marvin V. Manwaring

Delphi Technologies: 26 patents #37 of 4,124Top 1%
General Motors: 6 patents #2,601 of 18,328Top 15%
Saginaw, MI: #10 of 671 inventorsTop 2%
Michigan: #1,867 of 86,293 inventorsTop 3%
Overall (All Time): #108,716 of 4,157,543Top 3%
33 Patents All Time

Issued Patents All Time

Showing 26–33 of 33 patents

Patent #TitleCo-InventorsDate
6857660 Radial spring lock-tilt head Melvin L. Tinnin, Ravindra Jwalapathy, Ray Armstrong 2005-02-22
6802536 Adaptive energy absorbing device for a steering column Xiaoyu Li, Melvin L. Tinnin, Ravindra Jwalapathy, Ray Armstrong 2004-10-12
6799486 Interactive energy absorbing system Melvin L. Tinnin, Ravindra Jwalapathy 2004-10-05
6761376 Steering column for a vehicle Richard K. Riefe, Ray Armstrong, Ravindra Jwalapathy, Stephen W. Skillman 2004-07-13
6749222 Responsive energy absorbing device for steering columns Melvin L. Tinnin, Ravindra Jwalapathy, Ray Armstrong 2004-06-15
6659504 Steering column for a vehicle Richard K. Riefe, Ray Armstrong, Ravindra Jwalapathy, Stephen W. Skillman 2003-12-09
6616185 Locking system for adjustable position steering column Philippe Gayrard, Agathe Ledreau, Kevin C. Ross 2003-09-09
6419269 Locking system for adjustable position steering column Philippe Gayrard, Agathe Ledreau, Kevin C. Ross 2002-07-16