Inventor
HARNDEN JR JOHN D
US29 patents
⚠️ This page may combine multiple inventors who share the name “HARNDEN JR JOHN D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN ELECTRIC
27 patentsUS4559496ADec 17, 1985
LCD Hook-on digital ammeter
GEN ELECTRIC103 citations96
US4145708AMar 20, 1979
Power module with isolated substrates cooled by integral heat-energy-removal means
GEN ELECTRIC72 citations96
US4068281AJan 10, 1978
Thermally responsive metal oxide varistor transient suppression circuit
GEN ELECTRIC57 citations96
US4967568ANov 6, 1990
Control system, method of operating an atmospheric cooling apparatus and atmospheric cooling apparatus
GEN ELECTRIC25 citations93
US4755706AJul 5, 1988
Piezoelectric relays in sealed enclosures
GEN ELECTRIC35 citations93
US4670682AJun 2, 1987
Piezoelectric ceramic switching devices and systems and method of making the same
GEN ELECTRIC44 citations93
US4489234ADec 18, 1984
Radiant-energy heating and/or cooking apparatus with honeycomb coverplate
GEN ELECTRIC46 citations93
US4438396AMar 20, 1984
Low cost volt/ampere meter with liquid crystal display
GEN ELECTRIC27 citations93
US4310837AJan 12, 1982
Electrical device termination high temperature indicator
GEN ELECTRIC42 citations93
US5235159AAug 10, 1993
Control system, method of operating a heating apparatus and controlled heating apparatus
GEN ELECTRIC37 citations92
US4764714AAug 16, 1988
Electronic starting circuit for an alternating current motor
GEN ELECTRIC50 citations92
US4697118ASep 29, 1987
Piezoelectric switch
GEN ELECTRIC36 citations92
US4626698ADec 2, 1986
Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices
GEN ELECTRIC53 citations92
US4584525AApr 22, 1986
Current-shunt system for known conductors
GEN ELECTRIC39 citations92
US4561314ADec 31, 1985
Magnetoelastic force/pressure sensor
GEN ELECTRIC37 citations92
US4546658AOct 15, 1985
Piezoelectric force/pressure sensor
GEN ELECTRIC51 citations91
US4360847ANov 23, 1982
Diode assisted relay contactor
GEN ELECTRIC40 citations90
US4658154AApr 14, 1987
Piezoelectric relay switching circuit
GEN ELECTRIC20 citations82
US4714847ADec 22, 1987
Advanced piezoeceramic power switching devices employing protective gastight enclosure and method of manufacture
GEN ELECTRIC13 citations74
US4689517AAug 25, 1987
Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture
GEN ELECTRIC9 citations74
US4678957AJul 7, 1987
Piezoelectric ceramic switching devices and systems and methods of making the same
GEN ELECTRIC20 citations74
US4471300ASep 11, 1984
LDC Hook-on digital ammeter
GEN ELECTRIC12 citations74
US4070701AJan 24, 1978
Inverter power supply
GEN ELECTRIC19 citations74
US4060783ANov 29, 1977
Magnetic circuit and method of making
GEN ELECTRIC16 citations74
US4300392ANov 17, 1981
Interchangeable networks with non-linear sensors and method of producing such networks
GEN ELECTRIC19 citations69
US4669160AJun 2, 1987
Method for prepolarizing and centering a piezoelectric ceramic switching device
GEN ELECTRIC4 citations63
US4680840AJul 21, 1987
Method for prepolarizing and centering a piezoceramic power switching device
GEN ELECTRIC1 citations52