Inventor
KAWASHIMA TETSUYA
JP48 patents
⚠️ This page may combine multiple inventors who share the name “KAWASHIMA TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI ELECTRIC CO LTD
11 patentsUS9762130B2Sep 12, 2017
Switching controller for switching power supply
FUJI ELECTRIC CO LTD8 citations84
US11430535B2Aug 30, 2022
Semiconductor device and test method thereof
FUJI ELECTRIC CO LTD2 citations73
US11316504B2Apr 26, 2022
Apparatus comprising a differential amplifier
FUJI ELECTRIC CO LTD2 citations73
US9755527B2Sep 5, 2017
Switching power supply device
FUJI ELECTRIC CO LTD2 citations73
US9602012B2Mar 21, 2017
Apparatus and method for controlling switching power supply
FUJI ELECTRIC CO LTD4 citations73
US8934274B2Jan 13, 2015
Power conversion apparatus
FUJI ELECTRIC CO LTD3 citations63
US10236680B2Mar 19, 2019
Control circuit of switching power supply device
FUJI ELECTRIC CO LTD1 citations62
US10848146B2Nov 24, 2020
Reset circuit
FUJI ELECTRIC CO LTD0 citations42
US9985535B2May 29, 2018
Control circuit of switching power supply, insulated switching power supply
FUJI ELECTRIC CO LTD0 citations42
US9729069B2Aug 8, 2017
Control device of a switching power supply
FUJI ELECTRIC CO LTD0 citations42
US9124187B2Sep 1, 2015
Control device for switching power source
FUJI ELECTRIC CO LTD0 citations42
HITACHI LTD
10 patentsUS10008953B2Jun 26, 2018
Power conversion device and power conversion method for power conversion device
HITACHI LTD5 citations72
US9917529B2Mar 13, 2018
Power conversion unit, power converter and method of manufacturing power converter
HITACHI LTD3 citations72
US9906154B2Feb 27, 2018
Power conversion unit and power conversion device
HITACHI LTD2 citations72
US9807913B2Oct 31, 2017
Cooling structure of heating element and power conversion device
HITACHI LTD3 citations72
US9437797B2Sep 6, 2016
Cooling structure of heating element and power conversion device
HITACHI LTD3 citations72
US10014793B2Jul 3, 2018
Power conversion unit, power converter, and power conversion method
HITACHI LTD2 citations69
US9532489B2Dec 27, 2016
Power conversion device
HITACHI LTD2 citations62
US12512385B2Dec 30, 2025
Power conversion apparatus
HITACHI LTD0 citations56
US10141861B2Nov 27, 2018
Power conversion unit, power converter and method of manufacturing power converter
HITACHI LTD0 citations51
US9497887B2Nov 15, 2016
Cooling structure for heating element and power converter
HITACHI LTD0 citations40
RENESAS TECH CORP
5 patentsUS7145224B2Dec 5, 2006
Semiconductor device
RENESAS TECH CORP66 citations98
US7679173B2Mar 16, 2010
Semiconductor device including a DC-DC converter
RENESAS TECH CORP37 citations96
US7687885B2Mar 30, 2010
Semiconductor device with reduced parasitic inductance
RENESAS TECH CORP8 citations84
US7480163B2Jan 20, 2009
Semiconductor device and power supply device using the same
RENESAS TECH CORP7 citations74
US7782025B2Aug 24, 2010
Semiconductor device and power supply device using the same
RENESAS TECH CORP2 citations63
SASAKI MASAHIRO
5 patentsUS8164318B2Apr 24, 2012
Digital control switching power supply unit
SASAKI MASAHIRO13 citations84
US8552702B2Oct 8, 2013
Digital control switching regulator having an input voltage detection circuit
SASAKI MASAHIRO3 citations62
US8421430B2Apr 16, 2013
Digital control switching power supply unit
SASAKI MASAHIRO3 citations62
US8558527B2Oct 15, 2013
Switching power supply system provided with under voltage lock out circuit
SASAKI MASAHIRO1 citations52
US8847566B2Sep 30, 2014
Switching power supply with mode transition control
SASAKI MASAHIRO0 citations41
RENESAS ELECTRONICS CORP
5 patentsUS8008699B2Aug 30, 2011
Semiconductor device with circuit for reduced parasitic inductance
RENESAS ELECTRONICS CORP8 citations84
USRE41869EOct 26, 2010
Semiconductor device
RENESAS ELECTRONICS CORP9 citations84
US7932588B2Apr 26, 2011
Semiconductor device including a DC-DC converter having a metal plate
RENESAS ELECTRONICS CORP6 citations74
US8044520B2Oct 25, 2011
Semiconductor device
RENESAS ELECTRONICS CORP2 citations63
US9236321B2Jan 12, 2016
Semiconductor device and manufacturing method thereof
RENESAS ELECTRONICS CORP1 citations52
KAWASHIMA TETSUYA
4 patentsUS8618632B2Dec 31, 2013
Semiconductor device and multi-layered wiring substrate
KAWASHIMA TETSUYA15 citations83
US8598942B2Dec 3, 2013
Current correction circuit for power semiconductor device and current correction method
KAWASHIMA TETSUYA15 citations83
USRE43663ESep 18, 2012
Semiconductor device
KAWASHIMA TETSUYA10 citations83
US8692531B2Apr 8, 2014
Switching regulator performing output voltage changing function
KAWASHIMA TETSUYA0 citations41
HASHIMOTO TAKAYUKI
3 patentsUS8422261B2Apr 16, 2013
Semiconductor device and power supply device using the same
HASHIMOTO TAKAYUKI2 citations62
US8067979B2Nov 29, 2011
Semiconductor device and power supply device using the same
HASHIMOTO TAKAYUKI2 citations62
US8237493B2Aug 7, 2012
Semiconductor device and power supply device using the same
HASHIMOTO TAKAYUKI0 citations52