Dennis C. Eckhardt has been granted 7 US patents while listed as an inventor at General Motors . The first was granted in 1980 and the most recent in September 1998. Dennis C. Eckhardt ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Dennis C. Eckhardt in Saginaw, MI, US.
Patents per Year Patents granted per year, 1980 to 1998 Bar chart with a peak of 2 patents in 1992. peak 2 1980: 1 patents 1980 1987: 1 patents 1987 1992: 2 patents 1992 1993: 1 patents 1993 1996: 1 patents 1996 1998: 1 patents 1998
Issued Patents All Time
Profile Widget
Showing 1–7 of 7 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
5802949 Closed center power steering gear Alan Davis , Randy Scott Miller 1998-09-08
5491632 Rotary encoder with neutral position Andrzej M. Pawlak , William C. Lin , David W. Graber , Scott E. Weiss , Maged Radamis +2 more 1996-02-13
5184297 Method of calibrating power steering for uniform vehicle-to-vehicle steering effort David W. Graber , Andrzej M. Pawlak , Bryan L. Faist 1993-02-02
5119898 Electromagnetic control apparatus for varying the driver steering effort of a hydraulic power steering system David W. Graber , Andrzej M. Pawlak , Bryan L. Faist 1992-06-09
5086862 Apparatus for stabilizing power steering for temperature effects David W. Graber , Andrzej M. Pawlak 1992-02-11
4711224 Check valve in auxiliary vacuum system — 1987-12-08
4217811 Lash compensator for power steering gear Donald L. Dzioba 1980-08-19
$3,807,000
