Inventor
LEHNHOFF RICHARD N
US13 patents
Patents
13 patentsUS4562387ADec 31, 1985
Vehicle power window control
GEN MOTORS CORP62 citations95
US5055762AOct 8, 1991
Current controlled full wave transitor bridge inverter for a multiple phase AC machine
GEN MOTORS CORP22 citations92
US4970620ANov 13, 1990
FET bridge protection circuit
GEN MOTORS CORP29 citations92
US4710685ADec 1, 1987
Vehicle power window control circuit with reverse battery protection
GEN MOTORS CORP29 citations92
US4575662AMar 11, 1986
Vehicle power window control circuit
GEN MOTORS CORP44 citations92
US4665350AMay 12, 1987
Open-loop brushless motor control system
GEN MOTORS CORP48 citations91
US4313402AFeb 2, 1982
Internal combustion engine radiator cooling fan drive motor control system
GEN MOTORS CORP35 citations91
US3984755AOct 5, 1976
Voltage regulator
GEN MOTORS CORP41 citations91
US4476416AOct 9, 1984
Power window control for motor vehicle window
GEN MOTORS CORP34 citations87
US4987351AJan 22, 1991
Load-based control of an AC motor
GEN MOTORS CORP9 citations73
US4678972AJul 7, 1987
Self-starting single-phase brushless DC motor and control therefor
GEN MOTORS CORP14 citations73
US4931707AJun 5, 1990
Impedance matching circuit
GEN MOTORS CORP0 citations41
US3938022AFeb 10, 1976
DC to DC inverter circuit
GEN MOTORS CORP0 citations40