Inventor
YAMATO IKUO
JP12 patents
⚠️ This page may combine multiple inventors who share the name “YAMATO IKUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
11 patentsUS5297015AMar 22, 1994
Power supply control system
HITACHI LTD170 citations98
US5446645AAug 29, 1995
Inverter apparatus and uinterruptible power supply using the same
HITACHI LTD279 citations96
US6525510B1Feb 25, 2003
Vehicle operating system
HITACHI LTD67 citations95
US4777575AOct 11, 1988
Switching power supply
HITACHI LTD56 citations95
US6397611B1Jun 4, 2002
Air conditioner and brushless motor control unit
HITACHI LTD22 citations92
US5285365AFeb 8, 1994
Power conversion system, method for controlling the same, and uninterruptible power supply using the same
HITACHI LTD49 citations92
US5262935ANov 16, 1993
Parallel inverter control apparatus
HITACHI LTD41 citations92
US5115386AMay 19, 1992
Circuit for controlling an electric power supply apparatus, a method therefor and an uninterruptible power supply
HITACHI LTD48 citations89
US4878163AOct 31, 1989
Pulse width modulated inverter with high-to-low frequency output converter
HITACHI LTD23 citations82
US4855887AAug 8, 1989
Current and frequency converter having means to reduce switching losses
HITACHI LTD8 citations74
US7199547B2Apr 3, 2007
Apparatus, method or system for controlling mobile body
HITACHI LTD6 citations61