Inventor
YONEZAWA YU
JP50 patents
⚠️ This page may combine multiple inventors who share the name “YONEZAWA YU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
35 patentsUS8378647B2Feb 19, 2013
Power supply unit and information processor
FUJITSU LTD48 citations94
US8749210B1Jun 10, 2014
Power supply device
FUJITSU LTD20 citations92
US7986507B2Jul 26, 2011
Variable capacitor
FUJITSU LTD7 citations84
US7965159B2Jun 21, 2011
Micro-switching device and manufacturing method for the same
FUJITSU LTD9 citations84
US9887635B2Feb 6, 2018
Double-ended forward converter and power supply device
FUJITSU LTD5 citations73
US9837208B2Dec 5, 2017
Inductor apparatus and inductor apparatus manufacturing method
FUJITSU LTD5 citations72
US9800145B2Oct 24, 2017
Control device, DC-DC converter, switching power supply apparatus, and information processing apparatus
FUJITSU LTD3 citations72
US9590512B2Mar 7, 2017
Power supply apparatus
FUJITSU LTD3 citations69
US9472333B2Oct 18, 2016
Planar type transformer and switching power supply circuit
FUJITSU LTD2 citations63
US9166480B2Oct 20, 2015
Insulation-type power factor correction circuit
FUJITSU LTD2 citations63
US8901906B2Dec 2, 2014
Control circuit and electronic apparatus using the same
FUJITSU LTD2 citations63
US8350415B2Jan 8, 2013
Switch circuit with inductive load and capacitor
FUJITSU LTD2 citations63
US7786830B2Aug 31, 2010
Switch with movable portion
FUJITSU LTD2 citations63
US7755460B2Jul 13, 2010
Micro-switching device
FUJITSU LTD5 citations63
US7755459B2Jul 13, 2010
Micro-switching device and method of manufacturing the same
FUJITSU LTD6 citations63
US7053739B2May 30, 2006
Electrical contacting device and method of making the same
FUJITSU LTD2 citations63
US9438107B2Sep 6, 2016
Control device, control method, and power supply device
FUJITSU LTD2 citations62
US11264892B2Mar 1, 2022
Power-supply apparatus and power-supply method
FUJITSU LTD0 citations52
US10014770B1Jul 3, 2018
Power supply device, control circuit for power supply device, and control method for power supply device
FUJITSU LTD0 citations52
US10008940B2Jun 26, 2018
Power supply device and method for controlling power supply circuit
FUJITSU LTD0 citations52
US9762232B2Sep 12, 2017
Semiconductor device
FUJITSU LTD1 citations52
US9444350B2Sep 13, 2016
DC-DC converter with LC resonance circuit and transformer
FUJITSU LTD0 citations52
US9318972B2Apr 19, 2016
Power circuit
FUJITSU LTD0 citations52
US7961448B2Jun 14, 2011
Drive control method and unit for micro machine device
FUJITSU LTD0 citations52
US7903386B2Mar 8, 2011
Apparatus and method for drive controlling micro machine device
FUJITSU LTD0 citations52
US9960695B2May 1, 2018
Power supply apparatus and error detecting method for power supply apparatus
FUJITSU LTD1 citations51
US11028492B2Jun 8, 2021
Electrolytic system, electrolytic control circuit, and control method for electrolytic system
FUJITSU LTD0 citations49
US9893629B2Feb 13, 2018
Control method for switching power supply circuit and power supply device
FUJITSU LTD0 citations49
US9559593B2Jan 31, 2017
Synchronous rectification converter and control method of synchronous rectification converter
FUJITSU LTD0 citations42
US9553521B2Jan 24, 2017
Power supply device and control method of power supply device
FUJITSU LTD0 citations42
US7129434B2Oct 31, 2006
Electric contact device
FUJITSU LTD0 citations42
US10627455B2Apr 21, 2020
Capacitor life diagnosis apparatus and capacitor life diagnosis method
FUJITSU LTD0 citations41
US10345360B2Jul 9, 2019
Capacitor life diagnosis device, capacitor life diagnosis method, and program
FUJITSU LTD0 citations41
US9461542B2Oct 4, 2016
Power supply apparatus
FUJITSU LTD0 citations41
US9742284B2Aug 22, 2017
Multiphase power circuit
FUJITSU LTD0 citations38
TDK CORP
7 patentsUS10872717B2Dec 22, 2020
Composite magnetic material and magnetic core
TDK CORP2 citations71
US11682510B2Jun 20, 2023
Composite magnetic material, magnetic core, and electronic component
TDK CORP0 citations62
US11189408B2Nov 30, 2021
Soft magnetic alloy and magnetic device
TDK CORP0 citations62
US10923258B2Feb 16, 2021
Dust core and inductor element
TDK CORP0 citations62
US10943718B2Mar 9, 2021
Soft magnetic alloy and magnetic device
TDK CORP0 citations51
US10541072B2Jan 21, 2020
Soft magnetic alloy
TDK CORP0 citations51
US10854365B2Dec 1, 2020
Soft magnetic alloy and magnetic device
TDK CORP0 citations41
YONEZAWA YU
4 patentsUS8773103B2Jul 8, 2014
Power supply device
YONEZAWA YU4 citations72
US8693222B2Apr 8, 2014
DC-DC converter, power supply unit and an information processing apparatus
YONEZAWA YU5 citations72
US8427793B2Apr 23, 2013
Switching power supply, control circuit for controlling switching power supply, control method of switching power supply and module substrate
YONEZAWA YU4 citations61
US8258772B2Sep 4, 2012
DC-DC converter
YONEZAWA YU0 citations51