Inventor · disambiguated record
Yukihiro Nishikawa
Also filed as: NISHIKAWA YUKIHIRO
34 granted patents·8 pending applications·211 citations·filing 1988–2025
96Inventor score
Files withFUJI ELECTRIC CO LTD18FUJI ELEC DEVICE TECH CO LTD5NISHIKAWA YUKIHIRO5FUJI ELECTRIC SYSTEMS CO LTD2HITACHI LTD2
Top patents by PatentIndex Score
42 records- 0193US9774269B2Bidirectional DC/DC converterFUJI ELECTRIC CO LTD·Filed 2015·Granted Sep 26, 2017·11 cites·5 claims
- 0292US8773111B2Current estimation circuitNISHIKAWA YUKIHIRO·Filed 2010·Granted Jul 8, 2014·13 cites·12 claims
- 0390US9661783B2Magnetic component cooling structure and power converter having the sameFUJI ELECTRIC CO LTD·Filed 2015·Granted May 23, 2017·4 cites·19 claims
- 0489US9379617B2Resonant DC-DC converter control deviceFUJI ELECTRIC CO LTD·Filed 2012·Granted Jun 28, 2016·10 cites·15 claims
- 0587US9596791B2Cooling device and power converter having cooling deviceFUJI ELECTRIC CO LTD·Filed 2015·Granted Mar 14, 2017·6 cites·14 claims
- 0686US9832909B2Electronic equipment cooling device and power converter having electronic equipment cooling deviceFUJI ELECTRIC CO LTD·Filed 2015·Granted Nov 28, 2017·5 cites·12 claims
- 0783US8345456B2Control system of a power factor correction circuitFUJI ELECTRIC CO LTD·Filed 2009·Granted Jan 1, 2013·18 cites·8 claims
- 0882US11936303B2Power conversion circuit including a first bridge circuit and a second bridge ciruitFUJI ELECTRIC CO LTD·Filed 2021·Granted Mar 19, 2024·1 cites·8 claims
- 0982US7746672B2Switching power supply apparatusFUJI ELEC DEVICE TECH CO LTD·Filed 2008·Granted Jun 29, 2010·18 cites·15 claims
- 1080US10819243B2Isolated DC/DC converter, control unit for isolated DC/DC converter, and DC/AC converterFUJI ELECTRIC CO LTD·Filed 2019·Granted Oct 27, 2020·3 cites·6 claims
- 1177US8213189B2Resonance-type power supply with improved convertion efficiencyNISHIKAWA YUKIHIRO·Filed 2009·Granted Jul 3, 2012·14 cites·14 claims
- 1272US7245087B2Power conversion deviceFUJI ELEC DEVICE TECH CO LTD·Filed 2005·Granted Jul 17, 2007·12 cites·12 claims
- 1371US4915582ARotary turbine fluid pumpJAPAN ELECTRONIC CONTROL SYST·Filed 1988·Granted Apr 10, 1990·28 cites·30 claims
- 1470US7894212B2Switching power supply deviceFUJI ELECTRIC SYSTEMS CO LTD·Filed 2008·Granted Feb 22, 2011·9 cites·18 claims
- 1569US9197135B2Bi-directional DC/DC converter with frequency control change-overFUJI ELECTRIC CO LTD·Filed 2013·Granted Nov 24, 2015·3 cites·11 claims
- 1665US10400922B2Threaded joint for steel pipesNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Sep 3, 2019·1 cites·6 claims
- 1763US2022065371A1Threaded connection for steel pipeNIPPON STEEL CORP·Filed 2021·Application pending·0 cites
- 1860US6483722B2DC/DC converter and control method thereofFUJI ELECTRIC CO LTD·Filed 2001·Granted Nov 19, 2002·15 cites·7 claims
- 1958US11598453B2Threaded connection for steel pipeNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Mar 7, 2023·0 cites·9 claims
- 2057US8014177B2Switching power supply with pulse frequency modulation controlFUJI ELEC DEVICE TECH CO LTD·Filed 2009·Granted Sep 6, 2011·4 cites·7 claims
- 2157US7719859B2Switching power supply device and drive circuit thereofFUJI ELEC DEVICE TECH CO LTD·Filed 2007·Granted May 18, 2010·4 cites·9 claims
- 2256US6487092B2DC/DC converterFUJI ELECTRIC CO LTD·Filed 2001·Granted Nov 26, 2002·12 cites·5 claims
- 2356US2025358133A1Verification system and verification methodHITACHI LTD·Filed 2025·Application pending·0 cites
- 2454US12231063B2Power conversion device, control device for power conversion device, and power conversion control methodFUJI ELECTRIC CO LTD·Filed 2022·Granted Feb 18, 2025·0 cites·9 claims
- 2554US8443935B2Sound absorbing bodyNISHIKAWA YUKIHIRO·Filed 2010·Granted May 21, 2013·2 cites·20 claims
- 2651US6781432B2Control circuit of MOSFET for synchronous rectificationFUJI ELECTRIC CO LTD·Filed 2003·Granted Aug 24, 2004·4 cites·9 claims
- 2750US7596003B2Electric power converterFUJI DEVICE TECHNOLOGY CO LTD·Filed 2006·Granted Sep 29, 2009·4 cites·3 claims
- 2849US7242596B2Control method for switching power supply circuitFUJI ELEC DEVICE TECH CO LTD·Filed 2005·Granted Jul 10, 2007·2 cites·8 claims
- 2948US6507504B2Method of controlling DC/DC converter for reducing power consumptionFUJI ELECTRIC CO LTD·Filed 2001·Granted Jan 14, 2003·7 cites·9 claims
- 3047US2024303304A1Mandate processing device, mandate processing method, and mandate processing systemHITACHI LTD·Filed 2023·Application pending·0 cites
- 3144US9331580B2Switching power supply system and control circuit of the switching power supply systemFUJI ELECTRIC CO LTD·Filed 2013·Granted May 3, 2016·0 cites·16 claims
- 3244US8223512B2Power converter having an inductor including a first set of windings and a second set of windings both wound on a common coreYAMADA MICHIYA·Filed 2009·Granted Jul 17, 2012·1 cites·10 claims
- 3344US8090182B2Image reconstruction device, image reconstruction method, image reconstruction program, and CT apparatusNISHIKAWA YUKIHIRO·Filed 2007·Granted Jan 3, 2012·0 cites·16 claims
- 3442US8885365B2Switching power supply device and method for control thereofFUJI ELECTRIC CO LTD·Filed 2012·Granted Nov 11, 2014·0 cites·20 claims
- 3541US9230533B2Sound absorbing body and manufacturing method thereofNISHIKAWA YUKIHIRO·Filed 2010·Granted Jan 5, 2016·0 cites·2 claims
- 3641US9042128B2Switching power supplyFUJI ELECTRIC CO LTD·Filed 2012·Granted May 26, 2015·0 cites·12 claims
- 3741US2008299369A1Composite Nanosheet, Method of Producing the Same, and Method for Producing Metal Oxide NanosheetUNIV KYOTO·Filed 2005·Application pending·0 cites
- 3839US7872880B2Switch mode power supplyFUJI ELECTRIC SYSTEMS CO LTD·Filed 2008·Granted Jan 18, 2011·0 cites·7 claims
- 3939US2009237050A1Switching power supplyFUJI ELECTRIC DEVICE CO LTD·Filed 2009·Application pending·0 cites
- 4037US2010309699A1Power factor correction circuitFUJI ELECTRIC SYTEMS CO LTD·Filed 2010·Application pending·0 cites
- 4137US2015348694A1Cooling structure for magnetic component and power converter provided therewithFUJI ELECTRIC CO LTD·Filed 2015·Application pending·0 cites
- 4233US2002000923A1Switching power supply circuitFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →