Inventor
Youhei Kawahara
Inventor
Hitachi, JP
Overview
33→
Patents
2009–2020
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 33 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y02Tprimary
Y02TClimate change mitigation technologies related to transportation19%
B60LPropulsion of electrically-propelled vehicles17%
H02JElectric power networks17%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy15%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution15%
G01RMeasuring electric variables11%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management2%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles1%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests1%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology1%
PatentTitleYear
10,725,111Battery state detection device, secondary battery system, program product, and battery state detection method202010,686,229Battery state detection device, secondary battery system, program product, and battery state detection method202010,591,550Secondary-battery monitoring device and prediction method of battery capacity of secondary battery202010,147,983Secondary battery system20189,748,537'Storage battery apparatus'20179,689,926'Battery controlling using charge state calculator and charge state verifier'20179,641,011'Battery control device adapting the battery current limit by decreasing the stored current limit by comparing it with the measured battery current'20179,397,374'Secondary 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 method'20169,362,759'Battery control circuit and battery device'20169,356,451'Battery control circuit having multiple adjusting units'20169,293,937'Electric storage device'20169,263,777'Semiconductor device, battery pack, and electronic device'20169,252,602'Electric storage cell control circuit'20169,252,624'Battery control device and battery system'20169,130,379'Integrated circuit for controlling battery cell and vehicle power supply system'20158,947,023'Battery control device and motor drive system'20158,798,832'Electric storage device'20148,736,229'Battery control circuit for reducing power consumption'20148,583,389'Battery control device'20138,466,708'State detection device for power supply system'20138,426,047'Multi-series battery control system'20138,299,757'Secondary 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 method'20128,212,571'Vehicle power supply device'20128,193,763'Battery apparatus, battery control apparatus, and motor drive unit'20128,159,184'Automotive power supply system'20128,054,045'Status detector for power supply, power supply, and initial characteristic extracting device for use with power supply'20118,004,239'Battery management system for calculating charge and disharge powers'20117,911,178'Battery apparatus, battery control apparatus, and motor drive unit'20117,830,126'Hybrid vehicle control system and method'20107,755,331'Storage battery managing apparatus and vehicle controlling apparatus providing the same'20107,710,073'Secondary 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 method'20107,622,894'Status detector for power supply, power supply, and initial characteristic extracting device for use with power supply'20097,514,905'Battery management system'2009Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2009–2016Patents assigned to HITACHI VEHICLE ENERGY LTD (16)· patent assignee history
2009–2017Based in Hitachi, JP· patent location history
2010–2015Patents assigned to HITACHI LTD (10)· patent assignee history
2012–2017Patents assigned to KAWAHARA YOUHEI (18)· patent assignee history
2012–2017Patents assigned to EMORI AKIHIKO (14)· patent assignee history
2015–2020Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (12)· patent assignee history
2016–2020Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KAWAHARA YOUHEIself | 18 | 2012–2017 |
| HITACHI VEHICLE ENERGY LTD | 16 | 2009–2016 |
| EMORI AKIHIKO | 14 | 2012–2017 |
| HITACHI AUTOMOTIVE SYSTEMS LTD | 12 | 2015–2020 |
| HITACHI LTD | 10 | 2010–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 23 | 2009–2017 |
| Tokyo, JP | 10 | 2016–2020 |