Inventor · disambiguated record
Kenichiro Nakajima
Also filed as: NAKAJIMA KENICHIRO
33 granted patents·18 pending applications·281 citations·filing 2003–2025
97Inventor score
Top patents by PatentIndex Score
51 records- 0196US7974101B2Power converterHITACHI LTD·Filed 2006·Granted Jul 5, 2011·41 cites·13 claims
- 0296US7957169B2Power inverterHITACHI LTD·Filed 2007·Granted Jun 7, 2011·49 cites·10 claims
- 0394US9007767B2Power inverterNAKAJIMA KENICHIRO·Filed 2011·Granted Apr 14, 2015·34 cites·19 claims
- 0494US8369100B2Power converterHITACHI LTD·Filed 2011·Granted Feb 5, 2013·17 cites·12 claims
- 0593US8159849B2Downsized power inverter and housing for a larger heat release valueNAKAJIMA KENICHIRO·Filed 2011·Granted Apr 17, 2012·19 cites·3 claims
- 0691US7719838B2Power inverterHITACHI LTD·Filed 2008·Granted May 18, 2010·28 cites·10 claims
- 0789US8422244B2Power converterAZUMA KATSUNORI·Filed 2011·Granted Apr 16, 2013·9 cites·18 claims
- 0885US9345150B2Electrical converterFUKUMASU KEISUKE·Filed 2011·Granted May 17, 2016·11 cites·7 claims
- 0984US7849909B2Production method of thermoelectric semiconductor alloy, thermoelectric conversion module and thermoelectric power generating deviceSHOWA DENKO KK·Filed 2005·Granted Dec 14, 2010·7 cites·2 claims
- 1083US9558872B2R-T-B rare earth sintered magnet, alloy for R-T-B rare earth sintered magnet, and method of manufacturing the sameSHOWA DENKO KK·Filed 2014·Granted Jan 31, 2017·5 cites·3 claims
- 1183US8614906B2Power inverter suitable for a vehicleNAKAJIMA KENICHIRO·Filed 2012·Granted Dec 24, 2013·6 cites·5 claims
- 1283US7846273B2R-T-B type alloy, production method of R-T-B type alloy flake, fine powder for R-T-B type rare earth permanent magnet, and R-T-B type rare earth permanent magnetSHOWA DENKO KK·Filed 2006·Granted Dec 7, 2010·4 cites·8 claims
- 1380US8243463B2Capacitor moduleAZUMA KATSUNORI·Filed 2010·Granted Aug 14, 2012·4 cites·13 claims
- 1478US7997325B2Production method of thermoelectric semiconductor alloy, thermoelectric conversion module and thermoelectric power generating deviceSHOWA DENKO KK·Filed 2010·Granted Aug 16, 2011·2 cites·2 claims
- 1577US8411454B2Power converterAZUMA KATSUNORI·Filed 2011·Granted Apr 2, 2013·3 cites·6 claims
- 1676US7695574B2Alloy containing rare earth element, production method thereof, magnetostrictive device, and magnetic refrigerant materialSHOWA DENKO KK·Filed 2003·Granted Apr 13, 2010·17 cites·10 claims
- 1775US9526194B2Power conversion device with flow conduits for coolantHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Dec 20, 2016·4 cites·11 claims
- 1873US9078376B2Power conversion deviceNISHIHARA ATSUO·Filed 2011·Granted Jul 7, 2015·4 cites·6 claims
- 1971US9831799B2Power converter device having coolant flow pathsSHINOHARA SHUICHI·Filed 2011·Granted Nov 28, 2017·5 cites·8 claims
- 2071US9654046B2Reduced size power inverter suitable for a vehicleHITACHI LTD·Filed 2014·Granted May 16, 2017·2 cites·4 claims
- 2168US8042600B2Apparatus for producing alloySHOWA DENKO KK·Filed 2008·Granted Oct 25, 2011·2 cites·15 claims
- 2267US8006741B2Process for producing thermoelectric semiconductor alloy, thermoelectric conversion module, thermoelectric power generating device, rare earth alloy, producing process thereof, thermoelectric conversion material, and thermoelectric conversion system using filled skutterudite based alloySHOWA DENKO KK·Filed 2006·Granted Aug 30, 2011·3 cites·6 claims
- 2366US7705233B2Filled skutterudite-based alloy, production method thereof and thermoelectric conversion device fabricated using the alloySHOWA DENKO KK·Filed 2003·Granted Apr 27, 2010·5 cites·8 claims
- 2464US2025251039A1Working vehicleKUBOTA KK·Filed 2025·Application pending·0 cites
- 2561US11024448B2Alloy for R-T-B-based rare earth sintered magnet, process of producing alloy for R-T-B-based rare earth sintered magnet, alloy material for R-T-B-based rare earth sintered magnet, R-T-B-based rare earth sintered magnet, process of producing R-T-B-based rare earth sintered magnet, and motorTDK CORP·Filed 2016·Granted Jun 1, 2021·0 cites·6 claims
- 2656US2014132377A1Alloy for r-t-b-based rare earth sintered magnet, process of producing alloy for r-t-b-based rare earth sintered magnet, alloy material for r-t-b-based rare earth sintered magnet, r-t-b-based rare earth sintered magnet, process of producing r-t-b-based rare earth sintered magnet, and motorNAKAJIMA KENICHIRO·Filed 2012·Application pending·0 cites
- 2753US8171980B2Process for producing thermoelectric semiconductor alloy, thermoelectric conversion module, thermoelectric power generating device, rare earth alloy, producing process thereof, thermoelectric conversion material, and thermoelectric conversion system using filled skutterudite based alloyNAKAJIMA KENICHIRO·Filed 2011·Granted May 8, 2012·0 cites·6 claims
- 2851US10428408B2R-T-B-based rare earth sintered magnet and alloy for R-T-B-based rare earth sintered magnetTDK CORP·Filed 2016·Granted Oct 1, 2019·0 cites·10 claims
- 2951US8755209B2Reduced size power inverter suitable for a vehicleHITACHI LTD·Filed 2013·Granted Jun 17, 2014·0 cites·4 claims
- 3050US10490324B2Alloy for R-T-B-based rare earth sintered magnet and manufacturing method thereof, and manufacturing method of R-T-B-based rare earth sintered magnetTDK CORP·Filed 2016·Granted Nov 26, 2019·0 cites·1 claims
- 3150US9960335B2Thermoelectric element, thermoelectric module and method of manufacturing thermoelectric elementYOSHIDA YASUTAKA·Filed 2015·Granted May 1, 2018·0 cites·19 claims
- 3250US2009072938A1R-t-b system alloy and method of preparing r-t-b system alloy, fine powder for r-t-b system rare earth permanent magnet, and r-t-b system rare earth permanent magnetSHOWA DENKO KK·Filed 2008·Application pending·0 cites
- 3349US8110049B2Alloy containing rare earth element, production method thereof, magnetostrictive device, and magnetic refrigerant materialNAKAJIMA KENICHIRO·Filed 2010·Granted Feb 7, 2012·0 cites·9 claims
- 3449US2009035170A1R-t-b type alloy and production method thereof, fine powder for r-t-b type rare earth permanent magnet, and r-t-b type rare earth permanent magnetSHOWA DENKO KK·Filed 2008·Application pending·0 cites
- 3549US2007048612A1Alloy for negative electrode of lithium secondary batterySHOWA DENKO KK·Filed 2006·Application pending·0 cites
- 3647US10020097B2R-T-B rare earth sintered magnet and method of manufacturing the sameSHOWA DENKO KK·Filed 2014·Granted Jul 10, 2018·0 cites·11 claims
- 3747US2011260565A1Alloy material for r-t- b system rare earth permanent magnet, method for production of r-t-b system rare earth permanent magnet, and motorSHOWA DENKO KK·Filed 2009·Application pending·0 cites
- 3846US12147770B2Information processing device, reading comprehension support method, and programSHOWA DENKO KK·Filed 2020·Granted Nov 19, 2024·0 cites·15 claims
- 3946US9601979B2Alloy material for R-T-B system rare earth permanent magnet, method for producing R-T-B system rare earth permanent magnet, and motorNAKAJIMA KENICHIRO·Filed 2011·Granted Mar 21, 2017·0 cites·5 claims
- 4046US2010230013A1R-t-b alloy, process for production of r-t-b alloy, fine powder for r-t-b rare earth permanent magnets, and r-t-b rare earth permanent magnetSHOWA DENKO KK·Filed 2008·Application pending·0 cites
- 4145US2013099150A1R-t-b-based rare earth permanent magnet, motor, automobile, power generator, and wind power-generating apparatusNAKAJIMA KENICHIRO·Filed 2011·Application pending·0 cites
- 4245US2013154424A1Alloy material for r-t-b-based rare earth permanent magnet, method for producing r-t-b-based rare earth permanent magnet, and motorNAKAJIMA KENICHIRO·Filed 2011·Application pending·0 cites
- 4345US2013092868A1R-t-b-based rare earth permanent magnet, motor, automobile, power generator, and wind power-generating apparatusNAKAJIMA KENICHIRO·Filed 2011·Application pending·0 cites
- 4443US2008023057A1Thermoelectric Conversion Module, and Thermoelectric Power Generating Device and Method, Exhaust Heat Recovery System, Solar Heat Utilization System, and Peltier Cooling and Heating System, Provided TherewithSHOWA DENKO KK·Filed 2005·Application pending·0 cites
- 4542US2006157102A1Waste heat recovery system and thermoelectric conversion systemSHOWA DENKO KK·Filed 2006·Application pending·0 cites
- 4641US2025096670A1Power conversion deviceHITACHI ASTEMO LTD·Filed 2022·Application pending·0 cites
- 4740US2012091844A1Alloy material for r-t-b type rare earth permanent magnet, method for producing r-t-b type rare earth permanent magnet, and motorNAKAJIMA KENICHIRO·Filed 2010·Application pending·0 cites
- 4840US2016012946A1Method of manufacturing alloy for r-t-b-based rare earth sintered magnet and method of manufacturing r-t-b-based rare earth sintered magnetSHOWA DENKO KK·Filed 2015·Application pending·0 cites
- 4934US2014140119A1Power InverterSHINOHARA SHUICHI·Filed 2012·Application pending·0 cites
- 5032US2016284452A1R-t-b-based rare earth sintered magnet and method of manufacturing sameSHOWA DENKO KK·Filed 2016·Application pending·0 cites
Showing the top 50 of 51 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Kenichiro Nakajima files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →