Inventor
KIWAKI HISAKATSU
JP12 patents
⚠️ This page may combine multiple inventors who share the name “KIWAKI HISAKATSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
11 patentsUS4701682AOct 20, 1987
Control system for maintaining traction of rolling stock
HITACHI LTD53 citations90
US4124812ANov 7, 1978
Braking control apparatus for an electric motor operated vehicle
HITACHI LTD30 citations81
US4015187AMar 29, 1977
Exciter arrangement for generators
HITACHI LTD31 citations78
US4286211AAug 25, 1981
Direct current detecting device using saturable reactors
HITACHI LTD9 citations74
US4629034ADec 16, 1986
Elevator control apparatus
HITACHI LTD13 citations73
US4377758AMar 22, 1983
Magnetic amplifying apparatus
HITACHI LTD8 citations73
US4306283ADec 15, 1981
Power factor improving apparatus for power converter
HITACHI LTD16 citations72
US4163191AJul 31, 1979
Magnetic phase shifter control system
HITACHI LTD2 citations63
US4032833AJun 28, 1977
Chopper control device
HITACHI LTD6 citations62
US4012019AMar 15, 1977
Car signaling system
HITACHI LTD2 citations62
US4171510AOct 16, 1979
System for detecting output of controllable semiconductor device
HITACHI LTD4 citations61