KO

Keiichiro Ohkawa

VJ Vehicle Energy Japan: 22 patents #1 of 73Top 2%
HS Hitachi Automotive Systems: 15 patents #71 of 1,636Top 5%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
📍 Hitachinaka, JP: #95 of 2,447 inventorsTop 4%
Overall (All Time): #78,479 of 4,157,543Top 2%
40
Patents All Time

Issued Patents All Time

Showing 26–40 of 40 patents

Patent #TitleCo-InventorsDate
10147983 Secondary battery system Youhei Kawahara, Takeshi Inoue, Mutsumi Kikuchi 2018-12-04
9689926 Battery controlling using charge state calculator and charge state verifier Ryohei NAKAO, Youhei Kawahara, Naoyuki Igarashi, Yoshinori Aoshima 2017-06-27
9685807 Battery control device Ryouhei Nakao, Shinji Imai, Naoyuki Igarashi, Takahiro Soma 2017-06-20
9680320 Battery control apparatus Kenichiro Tsuru, Akinori Tada, Hiroshi Morikawa, Yoshinori Aoshima 2017-06-13
9641011 Battery control device adapting the battery current limit by decreasing the stored current limit by comparing it with the measured battery current Ryouhei Nakao, Youhei Kawahara 2017-05-02
9590431 Battery controller, battery system Kenji Nakai, Hiroshi Morikawa 2017-03-07
9557388 Battery control device Yoshinori Aoshima, Hiroshi Morikawa, Kenji Nakai 2017-01-31
9537325 Battery state estimation system, battery control system, battery system, and battery state estimation method Naoyuki Igarashi 2017-01-03
9423464 Battery control device Yoshinori Aoshima 2016-08-23
9252624 Battery control device and battery system Ryouhei Nakao, Youhei Kawahara 2016-02-02
9252602 Electric storage cell control circuit Youhei Kawahara, Ryouhei Nakao 2016-02-02
9203248 Battery management system using non-volatile memory Masahiro Ueda 2015-12-01
8484266 Embedded control system with floating-point conversion Shinya Fujimoto 2013-07-09
8417990 Multi-core processing system for vehicle control or an internal combustion engine controller 2013-04-09
6851106 Object oriented optimizing code generator with user selection of use or do not use for dynamic generation of functions Fumio Narisawa, Hidemitsu Naya, Takanori Yokoyama 2005-02-01