YK

Youhei Kawahara

HE Hitachi Vehicle Energy: 16 patents #3 of 95Top 4%
HS Hitachi Automotive Systems: 11 patents #120 of 1,636Top 8%
HI Hitachi: 10 patents #4,206 of 28,497Top 15%
VJ Vehicle Energy Japan: 3 patents #17 of 73Top 25%
RE Renesas Electronics: 1 patents #2,739 of 4,529Top 65%
Overall (All Time): #107,813 of 4,157,543Top 3%
33
Patents All Time

Issued Patents All Time

Showing 1–25 of 33 patents

Patent #TitleCo-InventorsDate
10725111 Battery state detection device, secondary battery system, program product, and battery state detection method Masahiro Yonemoto, Keiichiro Ohkawa 2020-07-28
10686229 Battery state detection device, secondary battery system, program product, and battery state detection method Masahiro Yonemoto, Keiichiro Ohkawa 2020-06-16
10591550 Secondary-battery monitoring device and prediction method of battery capacity of secondary battery Masahiro Yonemoto, Takeshi Inoue, Keiichiro Ohkawa 2020-03-17
10147983 Secondary battery system Takeshi Inoue, Mutsumi Kikuchi, Keiichiro Ohkawa 2018-12-04
9748537 Storage battery apparatus Akihiko Emori, Takahiro Kawata, Akihiko Kudo 2017-08-29
9689926 Battery controlling using charge state calculator and charge state verifier Keiichiro Ohkawa, Ryohei NAKAO, Naoyuki Igarashi, Yoshinori Aoshima 2017-06-27
9641011 Battery control device adapting the battery current limit by decreasing the stored current limit by comparing it with the measured battery current Keiichiro Ohkawa, Ryouhei Nakao 2017-05-02
9397374 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 Shuko Yamauchi, Akihiko Emori 2016-07-19
9362759 Battery control circuit and battery device Ryouhei Nakao, Akihiko Kudou, Akihiko Emori, Kei Sakabe 2016-06-07
9356451 Battery control circuit having multiple adjusting units Ryouhei Nakao, Akihiko Kudo, Akihiko Emori, Kei Sakabe 2016-05-31
9293937 Electric storage device Ryouhei Nakao, Akihiko Kudo, Akihiko Emori, Keiichiro Okawa, Yoshinori Aoshima 2016-03-22
9263777 Semiconductor device, battery pack, and electronic device Kenta Kobayashi, Suguru Sasaki, Yusuke Sugawara 2016-02-16
9252624 Battery control device and battery system Keiichiro Ohkawa, Ryouhei Nakao 2016-02-02
9252602 Electric storage cell control circuit Keiichiro Ohkawa, Ryouhei Nakao 2016-02-02
9130379 Integrated circuit for controlling battery cell and vehicle power supply system Kei Sakabe, Akihiko Emori, Akihiko Kudo, Kenji Kubo, Mutsumi Kikuchi +1 more 2015-09-08
8947023 Battery control device and motor drive system Akihiko Emori, Akihiko Kudo, Atsuo Suga, Masato Isogai, Kenji Kubo 2015-02-03
8798832 Electric storage device Kei Sakabe, Akihiko Emori 2014-08-05
8736229 Battery control circuit for reducing power consumption Ryouhei Nakao, Akihiko Kudo, Akihiko Emori, Kei Sakabe 2014-05-27
8583389 Battery control device Yoshinori Aoshima, Masahiro Ueda, Kouji Higashimoto 2013-11-12
8466708 State detection device for power supply system Yoshinori Aoshima, Kenichiro Tsuru, Akihiko Kudo, Akihiko Emori, Tatsumi Yamauchi 2013-06-18
8426047 Multi-series battery control system Akihiko Emori, Kei Sakabe, Mutsumi Kikuchi, Tatsumi Yamauchi, Akihiko Kudo 2013-04-23
8299757 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 Shuko Yamauchi, Akihiko Emori 2012-10-30
8212571 Vehicle power supply device Akihiko Emori, Kei Sakabe, Mutsumi Kikuchi, Tatsumi Yamauchi, Akihiko Kudo +1 more 2012-07-03
8193763 Battery apparatus, battery control apparatus, and motor drive unit Takahiro Kawata, Akihiko Emori, Akihiko Kudo 2012-06-05
8159184 Automotive power supply system Akihiko Emori, Kei Sakabe, Mutsumi Kikuchi, Tatsumi Yamauchi, Akihiko Kudo 2012-04-17