Donald E. Graham has been granted 17 US patents while listed as an inventor at General Motors . The first was granted in 1981 and the most recent in August 2000. Donald E. Graham ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Donald E. Graham in Centerville, OH, US.
Patents per Year Patents granted per year, 1981 to 2000 Bar chart with a peak of 4 patents in 1988. peak 4 1981: 1 patents 1981 1982: 2 patents 1982 1983: 2 patents 1983 1984: 3 patents 1984 1985: 1 patents 1985 1986: 1 patents 1986 1987: 1 patents 1987 1988: 4 patents 1988 1991: 1 patents 1991 2000: 1 patents 2000
Issued Patents All Time
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Showing 1–17 of 17 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6109532 Locomotive cab heating system Curt E. Schindler , Marc A. Richard 2000-08-29
4987351 Load-based control of an AC motor Robert J. Disser , Jeff A. Foust , Richard N. Lehnhoff , Bruce Heaston 1991-01-22
4784923 Hard metal alloy with surface region enriched with tantalum, niobium, vanadium or combinations thereof and methods of making the same — 1988-11-15
4768716 Vehicle speed sensitive windshield washer control Harry C. Buchanan, Jr. , Susan L. Via 1988-09-06
4733101 Vehicle power antenna control with inhibit during cranking Richard E. Wainwright , Jeff A. Foust , Gary R. Denton 1988-03-22
4730152 Vehicle power antenna control with drive stress limiting Jeff A. Foust , Richard E. Wainwright , Gary R. Denton 1988-03-08
4665488 Synchronizing wiper control James J. Kowalik , Alexander Kade 1987-05-12
4567412 Automatic wiper actuator for a vehicle window — 1986-01-28
4492904 Windshield wiper system with touch control — 1985-01-08
4442169 Multiple coated cutting tool and method for producing same — 1984-04-10
$7,936,000
4436775 Hard metal body and method of making same — 1984-03-13
$6,716,000
4431954 Motor vehicle windshield wiper apparatus with storm pattern Keith H. Carpenter , James J. Kowalik 1984-02-14
$23,265,000
4398704 Vehicle pneumatic suspension system with dead band adjustment Harry C. Buchanan, Jr. , Keith R. Cook , George T. Claude 1983-08-16
$13,077,000
4382282 Trim control system for reduced drag Raymond A. Nelson , Edmond E. Olive 1983-05-03
$6,480,000
4355270 Motor reversing circuit for vehicle windshield wiper Keith R. Cook , John E. Pozenel 1982-10-19
$48,350,000
4343865 Hard metal body and method of making same — 1982-08-10
$3,606,000
4288730 Proportional and integral solenoid armature positioning control system — 1981-09-08
$11,044,000
