Inventor · disambiguated record
Youhei Kawahara
Also filed as: KAWAHARA YOUHEI
33 granted patents·6 pending applications·605 citations·filing 2006–2017
98Inventor score
Files withHITACHI VEHICLE ENERGY LTD7EMORI AKIHIKO5KAWAHARA YOUHEI5HITACHI AUTOMOTIVE SYSTEMS LTD4HITACHI LTD3
Top patents by PatentIndex Score
39 records- 0198US7710073B2Secondary battery module, battery information management device, battery information management system, secondary battery reuse system, secondary battery recovery and sales system, secondary battery reuse method, and secondary battery recovery and sales methodHITACHI VEHICLE ENERGY LTD·Filed 2006·Granted May 4, 2010·37 cites·5 claims
- 0297US8299757B2Secondary battery module, battery information management device, battery information management system, secondary battery reuse system, secondary battery recovery and sales system, secondary battery reuse method, and secondary battery recovery and sales methodYAMAUCHI SHUKO·Filed 2010·Granted Oct 30, 2012·63 cites·14 claims
- 0396US8798832B2Electric storage deviceKAWAHARA YOUHEI·Filed 2010·Granted Aug 5, 2014·79 cites·23 claims
- 0494US10147983B2Secondary battery systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Dec 4, 2018·15 cites·8 claims
- 0593US8212571B2Vehicle power supply deviceEMORI AKIHIKO·Filed 2008·Granted Jul 3, 2012·61 cites·11 claims
- 0692US8193763B2Battery apparatus, battery control apparatus, and motor drive unitKAWATA TAKAHIRO·Filed 2011·Granted Jun 5, 2012·11 cites·17 claims
- 0792US8159184B2Automotive power supply systemEMORI AKIHIKO·Filed 2008·Granted Apr 17, 2012·48 cites·5 claims
- 0891US8583389B2Battery control deviceAOSHIMA YOSHINORI·Filed 2010·Granted Nov 12, 2013·20 cites·6 claims
- 0991US8466708B2State detection device for power supply systemKAWAHARA YOUHEI·Filed 2010·Granted Jun 18, 2013·11 cites·17 claims
- 1091US7911178B2Battery apparatus, battery control apparatus, and motor drive unitHITACHI VEHICLE ENERGY LTD·Filed 2008·Granted Mar 22, 2011·18 cites·6 claims
- 1190US8947023B2Battery control device and motor drive systemKAWAHARA YOUHEI·Filed 2009·Granted Feb 3, 2015·11 cites·13 claims
- 1290US8736229B2Battery control circuit for reducing power consumptionKAWAHARA YOUHEI·Filed 2011·Granted May 27, 2014·17 cites·21 claims
- 1389US9397374B2Secondary battery module, battery information management device, battery information management system, secondary battery reuse system, secondary battery recovery and sales system, secondary battery reuse method, and secondary battery recovery and sales methodYAMAUCHI SHUKO·Filed 2012·Granted Jul 19, 2016·5 cites·25 claims
- 1489US9356451B2Battery control circuit having multiple adjusting unitsHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted May 31, 2016·13 cites·13 claims
- 1588US10725111B2Battery state detection device, secondary battery system, program product, and battery state detection methodVEHICLE ENERGY JAPAN INC·Filed 2015·Granted Jul 28, 2020·3 cites·7 claims
- 1688US10591550B2Secondary-battery monitoring device and prediction method of battery capacity of secondary batteryHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Mar 17, 2020·3 cites·5 claims
- 1788US7622894B2Status detector for power supply, power supply, and initial characteristic extracting device for use with power supplyHITACHI VEHICLE ENERGY LTD·Filed 2006·Granted Nov 24, 2009·30 cites·14 claims
- 1886US7830126B2Hybrid vehicle control system and methodHITACHI LTD·Filed 2007·Granted Nov 9, 2010·28 cites·25 claims
- 1982US9130379B2Integrated circuit for controlling battery cell and vehicle power supply systemSAKABE KEI·Filed 2008·Granted Sep 8, 2015·25 cites·36 claims
- 2082US7514905B2Battery management systemHITACHI VEHICLE ENERGY LTD·Filed 2006·Granted Apr 7, 2009·17 cites·6 claims
- 2181US8054045B2Status detector for power supply, power supply, and initial characteristic extracting device for use with power supplyHITACHI VEHICLE ENERGY LTD·Filed 2009·Granted Nov 8, 2011·16 cites·8 claims
- 2280US9293937B2Electric storage deviceKAWAHARA YOUHEI·Filed 2011·Granted Mar 22, 2016·9 cites·20 claims
- 2380US8426047B2Multi-series battery control systemEMORI AKIHIKO·Filed 2008·Granted Apr 23, 2013·17 cites·6 claims
- 2479US7755331B2Storage battery managing apparatus and vehicle controlling apparatus providing the sameHITACHI LTD·Filed 2007·Granted Jul 13, 2010·17 cites·5 claims
- 2576US9263777B2Semiconductor device, battery pack, and electronic deviceRENESAS ELECTRONICS CORP·Filed 2013·Granted Feb 16, 2016·6 cites·13 claims
- 2673US9362759B2Battery control circuit and battery deviceNAKAO RYOUHEI·Filed 2011·Granted Jun 7, 2016·7 cites·20 claims
- 2772US10686229B2Battery state detection device, secondary battery system, program product, and battery state detection methodVEHICLE ENERGY JAPAN INC·Filed 2015·Granted Jun 16, 2020·1 cites·11 claims
- 2871US9252602B2Electric storage cell control circuitOHKAWA KEIICHIRO·Filed 2011·Granted Feb 2, 2016·4 cites·11 claims
- 2970US9641011B2Battery control device adapting the battery current limit by decreasing the stored current limit by comparing it with the measured battery currentOHKAWA KEIICHIRO·Filed 2011·Granted May 2, 2017·4 cites·8 claims
- 3070US8004239B2Battery management system for calculating charge and disharge powersHITACHI VEHICLE ENERGY LTD·Filed 2009·Granted Aug 23, 2011·7 cites·5 claims
- 3151US9689926B2Battery controlling using charge state calculator and charge state verifierHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Jun 27, 2017·0 cites·10 claims
- 3248US9748537B2Storage battery apparatusEMORI AKIHIKO·Filed 2007·Granted Aug 29, 2017·2 cites·19 claims
- 3348US2008030198A1Battery monitoring device and batteriesKAWATA TAKAHIRO·Filed 2007·Application pending·0 cites
- 3445US2014184236A1Battery control apparatus and battery systemHITACHI VEHICLE ENERGY LTD·Filed 2011·Application pending·0 cites
- 3542US9252624B2Battery control device and battery systemOHKAWA KEIICHIRO·Filed 2011·Granted Feb 2, 2016·0 cites·9 claims
- 3641US2014239914A1Battery controllerIGARASHI NAOYUKI·Filed 2011·Application pending·0 cites
- 3740US2006208693A1Battery controllerEMORI AKIHIKO·Filed 2006·Application pending·0 cites
- 3840US2013320989A1Battery state estimation method and battery control systemINOUE TAKESHI·Filed 2011·Application pending·0 cites
- 3939US2019386511A1Power management system, power management device, and power management methodHITACHI LTD·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →