Inventor
HIROTA MASAYUKI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “HIROTA MASAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI IND EQUIPMENT SYS
10 patentsUS7206204B2Apr 17, 2007
Electric circuit module
HITACHI IND EQUIPMENT SYS53 citations92
US8385078B2Feb 26, 2013
Power transducer
HITACHI IND EQUIPMENT SYS9 citations84
US7904254B2Mar 8, 2011
Power conversion apparatus and method of estimating power cycle life
HITACHI IND EQUIPMENT SYS9 citations83
US7394668B2Jul 1, 2008
Switching power supply circuit and frequency converter
HITACHI IND EQUIPMENT SYS7 citations73
US7272004B2Sep 18, 2007
Frequency converter
HITACHI IND EQUIPMENT SYS6 citations71
US7054157B2May 30, 2006
Frequency converter
HITACHI IND EQUIPMENT SYS10 citations71
US7643304B2Jan 5, 2010
Filter apparatus and frequency converter to which the filter apparatus is connected
HITACHI IND EQUIPMENT SYS6 citations62
US7151680B2Dec 19, 2006
Switching power supply circuit and frequency converter
HITACHI IND EQUIPMENT SYS3 citations62
US7518890B2Apr 14, 2009
AC/DC/AC converter with reduced inductance in the DC filter capacitors
HITACHI IND EQUIPMENT SYS4 citations61
US8848384B2Sep 30, 2014
Power transducer
HITACHI IND EQUIPMENT SYS0 citations52