Inventor
KITA EIZO
JP5 patents
Patents
5 patentsUS5026256AJun 25, 1991
Variable speed pumping-up system
HITACHI LTD102 citations95
US4920277AApr 24, 1990
Control system for a variable speed hydro-power plant apparatus
HITACHI LTD43 citations92
US5160244ANov 3, 1992
Pump system operable by variable-speed control
HITACHI LTD42 citations91
US5099409AMar 24, 1992
Semiconductor electric power conversion system enabling fault and/or overtemperature protection
HITACHI LTD20 citations80
US5265002ANov 23, 1993
Fault protection for a multiphase bridge power converter
HITACHI LTD15 citations72