Inventor · disambiguated record
Tetsuya Kawashima
Also filed as: KAWASHIMA TETSUYA
48 granted patents·6 pending applications·294 citations·filing 2005–2025
98Inventor score
Files withFUJI ELECTRIC CO LTD12HITACHI LTD10RENESAS ELECTRONICS CORP8RENESAS TECH CORP5SASAKI MASAHIRO5
Top patents by PatentIndex Score
54 records- 0198US7145224B2Semiconductor deviceRENESAS TECH CORP·Filed 2005·Granted Dec 5, 2006·66 cites·24 claims
- 0296US7679173B2Semiconductor device including a DC-DC converterRENESAS TECH CORP·Filed 2007·Granted Mar 16, 2010·37 cites·10 claims
- 0393US8598942B2Current correction circuit for power semiconductor device and current correction methodKAWASHIMA TETSUYA·Filed 2012·Granted Dec 3, 2013·15 cites·11 claims
- 0491US9762130B2Switching controller for switching power supplyFUJI ELECTRIC CO LTD·Filed 2016·Granted Sep 12, 2017·8 cites·11 claims
- 0591US8618632B2Semiconductor device and multi-layered wiring substrateKAWASHIMA TETSUYA·Filed 2011·Granted Dec 31, 2013·15 cites·4 claims
- 0691US8164318B2Digital control switching power supply unitSASAKI MASAHIRO·Filed 2010·Granted Apr 24, 2012·13 cites·20 claims
- 0790USRE43663ESemiconductor deviceKAWASHIMA TETSUYA·Filed 2010·Granted Sep 18, 2012·10 cites·48 claims
- 0889US8237232B2Semiconductor device including a DC-DC converter having a metal plateUNO TOMOAKI·Filed 2011·Granted Aug 7, 2012·9 cites·19 claims
- 0988US8008699B2Semiconductor device with circuit for reduced parasitic inductanceRENESAS ELECTRONICS CORP·Filed 2010·Granted Aug 30, 2011·8 cites·5 claims
- 1085US11430535B2Semiconductor device and test method thereofFUJI ELECTRIC CO LTD·Filed 2020·Granted Aug 30, 2022·2 cites·14 claims
- 1185US7932588B2Semiconductor device including a DC-DC converter having a metal plateRENESAS ELECTRONICS CORP·Filed 2010·Granted Apr 26, 2011·6 cites·8 claims
- 1284USRE41869ESemiconductor deviceRENESAS ELECTRONICS CORP·Filed 2008·Granted Oct 26, 2010·9 cites·47 claims
- 1383US9602012B2Apparatus and method for controlling switching power supplyFUJI ELECTRIC CO LTD·Filed 2016·Granted Mar 21, 2017·4 cites·12 claims
- 1483US7480163B2Semiconductor device and power supply device using the sameRENESAS TECH CORP·Filed 2006·Granted Jan 20, 2009·7 cites·12 claims
- 1582US8441242B2Digitally controlled integrated DC-DC converter with transient suppressionNG WAI TUNG·Filed 2010·Granted May 14, 2013·11 cites·9 claims
- 1681US9807913B2Cooling structure of heating element and power conversion deviceHITACHI LTD·Filed 2016·Granted Oct 31, 2017·3 cites·23 claims
- 1781US8592914B2Semiconductor device and manufacturing method of the sameUNO TOMOAKI·Filed 2012·Granted Nov 26, 2013·4 cites·14 claims
- 1881US7687885B2Semiconductor device with reduced parasitic inductanceRENESAS TECH CORP·Filed 2007·Granted Mar 30, 2010·8 cites·2 claims
- 1980US9437797B2Cooling structure of heating element and power conversion deviceHITACHI LTD·Filed 2015·Granted Sep 6, 2016·3 cites·13 claims
- 2075US10008953B2Power conversion device and power conversion method for power conversion deviceHITACHI LTD·Filed 2014·Granted Jun 26, 2018·5 cites·13 claims
- 2175US9532489B2Power conversion deviceHITACHI LTD·Filed 2015·Granted Dec 27, 2016·2 cites·9 claims
- 2275US8445669B2Production process of ethynylthymidine compounds from 5-methyluridine as a starting materialSATO TATSUNORI·Filed 2009·Granted May 21, 2013·10 cites·27 claims
- 2374US9917529B2Power conversion unit, power converter and method of manufacturing power converterHITACHI LTD·Filed 2014·Granted Mar 13, 2018·3 cites·14 claims
- 2473US8422261B2Semiconductor device and power supply device using the sameHASHIMOTO TAKAYUKI·Filed 2012·Granted Apr 16, 2013·2 cites·15 claims
- 2573US8067979B2Semiconductor device and power supply device using the sameHASHIMOTO TAKAYUKI·Filed 2010·Granted Nov 29, 2011·2 cites·25 claims
- 2672US11316504B2Apparatus comprising a differential amplifierFUJI ELECTRIC CO LTD·Filed 2019·Granted Apr 26, 2022·2 cites·17 claims
- 2772US9755527B2Switching power supply deviceFUJI ELECTRIC CO LTD·Filed 2016·Granted Sep 5, 2017·2 cites·9 claims
- 2871US8934274B2Power conversion apparatusFUJI ELECTRIC CO LTD·Filed 2012·Granted Jan 13, 2015·3 cites·6 claims
- 2970US8552702B2Digital control switching regulator having an input voltage detection circuitSASAKI MASAHIRO·Filed 2011·Granted Oct 8, 2013·3 cites·10 claims
- 3070US7812578B2DC-DC converterFUJI ELECTRIC SYSTEMS CO LTD·Filed 2008·Granted Oct 12, 2010·8 cites·17 claims
- 3169US9906154B2Power conversion unit and power conversion deviceHITACHI LTD·Filed 2015·Granted Feb 27, 2018·2 cites·20 claims
- 3269US8421430B2Digital control switching power supply unitSASAKI MASAHIRO·Filed 2010·Granted Apr 16, 2013·3 cites·8 claims
- 3369US7782025B2Semiconductor device and power supply device using the sameRENESAS TECH CORP·Filed 2009·Granted Aug 24, 2010·2 cites·8 claims
- 3466US10236680B2Control circuit of switching power supply deviceFUJI ELECTRIC CO LTD·Filed 2017·Granted Mar 19, 2019·1 cites·9 claims
- 3564US9236321B2Semiconductor device and manufacturing method thereofRENESAS ELECTRONICS CORP·Filed 2013·Granted Jan 12, 2016·1 cites·18 claims
- 3662US10014793B2Power conversion unit, power converter, and power conversion methodHITACHI LTD·Filed 2014·Granted Jul 3, 2018·2 cites·11 claims
- 3762US8044520B2Semiconductor deviceRENESAS ELECTRONICS CORP·Filed 2007·Granted Oct 25, 2011·2 cites·11 claims
- 3862US2025330154A1Driver circuitFUJI ELECTRIC CO LTD·Filed 2025·Application pending·0 cites
- 3959US12512385B2Power conversion apparatusHITACHI LTD·Filed 2023·Granted Dec 30, 2025·0 cites·8 claims
- 4057US8558527B2Switching power supply system provided with under voltage lock out circuitSASAKI MASAHIRO·Filed 2011·Granted Oct 15, 2013·1 cites·7 claims
- 4154US10141861B2Power conversion unit, power converter and method of manufacturing power converterHITACHI LTD·Filed 2018·Granted Nov 27, 2018·0 cites·6 claims
- 4253US9497887B2Cooling structure for heating element and power converterHITACHI LTD·Filed 2014·Granted Nov 15, 2016·0 cites·22 claims
- 4353US8237493B2Semiconductor device and power supply device using the sameHASHIMOTO TAKAYUKI·Filed 2011·Granted Aug 7, 2012·0 cites·15 claims
- 4449US9124187B2Control device for switching power sourceFUJI ELECTRIC CO LTD·Filed 2014·Granted Sep 1, 2015·0 cites·18 claims
- 4549US2011278655A1Semiconductor Device with Circuit for Reduced Parasitic InductanceHASHIMOTO TAKAYUKI·Filed 2011·Application pending·0 cites
- 4647US9729069B2Control device of a switching power supplyFUJI ELECTRIC CO LTD·Filed 2014·Granted Aug 8, 2017·0 cites·5 claims
- 4747US2016049315A1Semiconductor device and manufacturing method thereofRENESAS ELECTRONICS CORP·Filed 2015·Application pending·0 cites
- 4845US10848146B2Reset circuitFUJI ELECTRIC CO LTD·Filed 2019·Granted Nov 24, 2020·0 cites·15 claims
- 4942US2015340934A1Inverter Device and Inverter Device Integrated with MotorHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Application pending·0 cites
- 5041US8692531B2Switching regulator performing output voltage changing functionKAWASHIMA TETSUYA·Filed 2012·Granted Apr 8, 2014·0 cites·8 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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