Inventor
KATOH SHUJI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “KATOH SHUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
18 patentsUS6380796B2Apr 30, 2002
Semiconductor power converting apparatus
HITACHI LTD60 citations95
US6490182B2Dec 3, 2002
Power conversion apparatus
HITACHI LTD23 citations92
US5883403AMar 16, 1999
Power semiconductor device
HITACHI LTD29 citations92
US6891214B2May 10, 2005
Semiconductor power module and power converter
HITACHI LTD5 citations73
US6809561B2Oct 26, 2004
Semiconductor power converting apparatus
HITACHI LTD8 citations73
US6703874B2Mar 9, 2004
Gate driver for MOS control semiconductor devices
HITACHI LTD8 citations73
US6242968B1Jun 5, 2001
Semiconductor power converting apparatus
HITACHI LTD6 citations73
US9190930B2Nov 17, 2015
Power conversion device including a plurality of legs connected in parallel, each leg including a plurality of unit converters connected in series
HITACHI LTD4 citations72
US9917534B2Mar 13, 2018
Power conversion device with a plurality of series circuits
HITACHI LTD3 citations71
US9461560B2Oct 4, 2016
Power conversion device with a plurality of series circuits
HITACHI LTD4 citations71
US7643317B2Jan 5, 2010
Power converting device and method for controlling the same
HITACHI LTD7 citations71
US9344020B2May 17, 2016
Power conversion apparatus and electrical-mechanical energy conversion system
HITACHI LTD2 citations62
US6839213B2Jan 4, 2005
Power converter of electric car or hybrid car
HITACHI LTD4 citations62
US6727516B2Apr 27, 2004
Semiconductor power conversion apparatus
HITACHI LTD3 citations62
US9252684B2Feb 2, 2016
Power conversion apparatus and high-voltage DC transmission system
HITACHI LTD2 citations61
US6717177B2Apr 6, 2004
Semiconductor power conversion apparatus
HITACHI LTD0 citations52
US9219426B2Dec 22, 2015
Switching element, power converter, direct current transmission system, current control device, method of controlling power converter, and method of controlling current in voltage source converter
HITACHI LTD0 citations50
US10243365B2Mar 26, 2019
Power system equipment introduction assistance device and method
HITACHI LTD0 citations47