Inventor · disambiguated record
Richard N. Lehnhoff
Also filed as: LEHNHOFF RICHARD N
13 granted patents·367 citations·filing 1974–1990
93Inventor score
Files withGEN MOTORS CORP13
Top patents by PatentIndex Score
13 records- 0189US4562387AVehicle power window controlGEN MOTORS CORP·Filed 1984·Granted Dec 31, 1985·62 cites·5 claims
- 0289US3984755AVoltage regulatorGEN MOTORS CORP·Filed 1975·Granted Oct 5, 1976·41 cites·5 claims
- 0386US4665350AOpen-loop brushless motor control systemGEN MOTORS CORP·Filed 1986·Granted May 12, 1987·48 cites·4 claims
- 0483US4313402AInternal combustion engine radiator cooling fan drive motor control systemGEN MOTORS CORP·Filed 1979·Granted Feb 2, 1982·35 cites·5 claims
- 0581US4970620AFET bridge protection circuitGEN MOTORS CORP·Filed 1989·Granted Nov 13, 1990·29 cites·2 claims
- 0680US4575662AVehicle power window control circuitGEN MOTORS CORP·Filed 1984·Granted Mar 11, 1986·44 cites·2 claims
- 0776US5055762ACurrent controlled full wave transitor bridge inverter for a multiple phase AC machineGEN MOTORS CORP·Filed 1989·Granted Oct 8, 1991·22 cites·1 claims
- 0871US4710685AVehicle power window control circuit with reverse battery protectionGEN MOTORS CORP·Filed 1987·Granted Dec 1, 1987·29 cites·3 claims
- 0970US4476416APower window control for motor vehicle windowGEN MOTORS CORP·Filed 1983·Granted Oct 9, 1984·34 cites·4 claims
- 1054US4678972ASelf-starting single-phase brushless DC motor and control thereforGEN MOTORS CORP·Filed 1986·Granted Jul 7, 1987·14 cites·3 claims
- 1142US4987351ALoad-based control of an AC motorGEN MOTORS CORP·Filed 1990·Granted Jan 22, 1991·9 cites·3 claims
- 1230US4931707AImpedance matching circuitGEN MOTORS CORP·Filed 1989·Granted Jun 5, 1990·0 cites·5 claims
- 1329US3938022ADC to DC inverter circuitGEN MOTORS CORP·Filed 1974·Granted Feb 10, 1976·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →