Inventor
PARK JOHN N
US27 patents
⚠️ This page may combine multiple inventors who share the name “PARK JOHN N”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN ELECTRIC
21 patentsUS4541041ASep 10, 1985
Full load to no-load control for a voltage fed resonant inverter
GEN ELECTRIC158 citations99
US5359180AOct 25, 1994
Power supply system for arcjet thrusters
GEN ELECTRIC110 citations98
US5608771AMar 4, 1997
Contactless power transfer system for a rotational load
GEN ELECTRIC115 citations97
US5270657ADec 14, 1993
Split gradient amplifier for an MRI system
GEN ELECTRIC117 citations97
US4876635AOct 24, 1989
Series resonant inverter with lossless snubber-resetting components
GEN ELECTRIC62 citations96
US4672528AJun 9, 1987
Resonant inverter with improved control
GEN ELECTRIC109 citations96
US4374355AFeb 15, 1983
Electrically isolated battery charger for on-board electric vehicle applications
GEN ELECTRIC33 citations93
US3940682AFeb 24, 1976
Rectifier circuits using transistors as rectifying elements
GEN ELECTRIC34 citations93
US5063349ANov 5, 1991
Transformer-coupled gradient speed-up circuit
GEN ELECTRIC22 citations92
US4961054AOct 2, 1990
Gradient current speed-up circuit for high-speed NMR imaging system
GEN ELECTRIC23 citations92
US4670832AJun 2, 1987
Resonant inverter having improved control at enablement
GEN ELECTRIC41 citations92
US4329630AMay 11, 1982
Single transistor power control circuit for a DC motor washing machine drive
GEN ELECTRIC51 citations92
US5663647ASep 2, 1997
Switching gradient amplifier with adjustable DC bus voltage
GEN ELECTRIC53 citations91
US4951185AAug 21, 1990
Resonant inverter employing frequency and phase modulation using optimal trajectory control
GEN ELECTRIC29 citations91
US4318165AMar 2, 1982
Resonant-flyback power supply with filament winding for magnetron and the like loads
GEN ELECTRIC47 citations89
US5352861AOct 4, 1994
Resonant high-voltage pulser for arcjet thruster ignition
GEN ELECTRIC14 citations74
US4347464AAug 31, 1982
FET Motor drive system
GEN ELECTRIC14 citations74
US4339671AJul 13, 1982
Proportional base drive circuit
GEN ELECTRIC13 citations74
US4969076ANov 6, 1990
Load compensating gain control for a series resonant inverter
GEN ELECTRIC9 citations72
US4540894ASep 10, 1985
Peak turn-on current limiting base drive
GEN ELECTRIC5 citations63
US7633725B2Dec 15, 2009
Micro-electromechanical system based soft switching
GEN ELECTRIC3 citations58