Inventor
FELLOWS MARK W
US17 patents
⚠️ This page may combine multiple inventors who share the name “FELLOWS MARK W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PHILIPS CORP
15 patentsUS4952849AAug 28, 1990
Fluorescent lamp controllers
PHILIPS CORP160 citations98
US4700113AOct 13, 1987
Variable high frequency ballast circuit
PHILIPS CORP148 citations97
US4698554AOct 6, 1987
Variable frequency current control device for discharge lamps
PHILIPS CORP86 citations96
US4585974AApr 29, 1986
Varible frequency current control device for discharge lamps
PHILIPS CORP78 citations96
US4560908ADec 24, 1985
High-frequency oscillator-inverter ballast circuit for discharge lamps
PHILIPS CORP61 citations94
US5187414AFeb 16, 1993
Fluorescent lamp controllers
PHILIPS CORP60 citations93
US4628284ADec 9, 1986
High frequency high voltage power supply preventing simultaneous transistor conduction
PHILIPS CORP29 citations92
US4498031AFeb 5, 1985
Variable frequency current control device for discharge lamps
PHILIPS CORP42 citations92
US5111118AMay 5, 1992
Fluorescent lamp controllers
PHILIPS CORP53 citations89
US4453109AJun 5, 1984
Magnetic transformer switch and combination thereof with a discharge lamp
PHILIPS CORP34 citations89
US4484108ANov 20, 1984
High frequency ballast-ignition system for discharge lamps
PHILIPS CORP31 citations88
US4481447ANov 6, 1984
Power supply for a magnetron
PHILIPS CORP18 citations73
US4029989AJun 14, 1977
Electric discharge lamp with voltage multiplier circuit having a capacitance which changes with temperature
PHILIPS CORP7 citations73
US4701671AOct 20, 1987
High-frequency oscillator-inverter ballast circuit for discharge lamps
PHILIPS CORP16 citations72
US5099176AMar 24, 1992
Fluorescent lamp ballast operable from two different power supplies
PHILIPS CORP9 citations71