Inventor
SAKANO JUNICHI
JP32 patents
⚠️ This page may combine multiple inventors who share the name “SAKANO JUNICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
20 patentsUS5859446AJan 12, 1999
Diode and power converting apparatus
HITACHI LTD96 citations98
US6392908B2May 21, 2002
Method and apparatus for driving a semiconductor element
HITACHI LTD21 citations93
US6373731B1Apr 16, 2002
Surge voltage suppressed power inverter using a voltage driven switching element
HITACHI LTD46 citations93
US6275399B1Aug 14, 2001
Method and apparatus for driving a semiconductor element with variable resistance circuitry
HITACHI LTD31 citations93
US6204717B1Mar 20, 2001
Semiconductor circuit and semiconductor device for use in equipment such as a power converting apparatus
HITACHI LTD28 citations92
US7138778B2Nov 21, 2006
Current sensor using mirror MOSFET and PWM inverter incorporating the same
HITACHI LTD16 citations91
US6414370B1Jul 2, 2002
Semiconductor circuit preventing electromagnetic noise
HITACHI LTD15 citations84
US7112935B2Sep 26, 2006
Current sensor using mirror MOSFET and PWM inverter incorporating the same
HITACHI LTD12 citations82
US5767555AJun 16, 1998
Compound semiconductor device controlled by MIS gate, driving method therefor and electric power conversion device using the compound semiconductor device and the driving method
HITACHI LTD9 citations74
US7126308B2Oct 24, 2006
Interface circuit with power converter with interface circuit and electric vehicle with power converter
HITACHI LTD9 citations73
US11152887B2Oct 19, 2021
Power conversion device, motor control system, and diagnosis method for power conversion device
HITACHI LTD2 citations72
US11016138B2May 25, 2021
Diagnosis system for power conversion device, diagnosis method for semiconductor module, and power conversion device
HITACHI LTD2 citations72
US10122296B2Nov 6, 2018
Power converter, diagnostic system of power converter, and power converter diagnostic method using current change
HITACHI LTD2 citations71
US8384124B2Feb 26, 2013
Semiconductor device and semiconductor integrated circuit device for driving plasma display using the semiconductor device
HITACHI LTD2 citations63
US7948058B2May 24, 2011
Semiconductor device and semiconductor integrated circuit device for driving plasma display using the semiconductor device
HITACHI LTD4 citations63
US7586467B2Sep 8, 2009
Load drive circuit, integrated circuit, and plasma display
HITACHI LTD2 citations63
US7875509B2Jan 25, 2011
Manufacturing method of semiconductor apparatus and semiconductor apparatus, power converter using the same
HITACHI LTD3 citations62
US9793011B2Oct 17, 2017
Structure, electronic element module, heat exchanger, fuel rod, and fuel assembly
HITACHI LTD0 citations48
US10229974B2Mar 12, 2019
Semiconductor device and power conversion device
HITACHI LTD0 citations41
US10122299B2Nov 6, 2018
Power conversion device
HITACHI LTD0 citations41
HITACHI POWER SEMICONDUCTOR DEVICE LTD
7 patentsUS11012022B2May 18, 2021
Inverter device and electric motor device using same
HITACHI POWER SEMICONDUCTOR DEVICE LTD2 citations73
US9966871B2May 8, 2018
Rectification device, alternator, and power conversion device
HITACHI POWER SEMICONDUCTOR DEVICE LTD4 citations71
US9831145B2Nov 28, 2017
Semiconductor device, and alternator and power converter using the semiconductor device
HITACHI POWER SEMICONDUCTOR DEVICE LTD4 citations71
US11049965B2Jun 29, 2021
Semiconductor device and alternator using the same
HITACHI POWER SEMICONDUCTOR DEVICE LTD0 citations52
US12592651B2Mar 31, 2026
Rectifier circuit and power supply using same
HITACHI POWER SEMICONDUCTOR DEVICE LTD0 citations50
US12549109B2Feb 10, 2026
Rectifier circuit and power supply using the same
HITACHI POWER SEMICONDUCTOR DEVICE LTD0 citations50
US10319849B2Jun 11, 2019
Semiconductor device, and alternator and power conversion device which use same
HITACHI POWER SEMICONDUCTOR DEVICE LTD0 citations40