Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10209317 | Battery control device for calculating battery deterioration based on internal resistance increase rate | Keiichiro Ohkawa | 2019-02-19 |
| 9952288 | Battery controller | Ryohei NAKAO, Yohei Kawahara, Akihiko Kudou, Keiichiro Ookawa | 2018-04-24 |
| 9689926 | Battery controlling using charge state calculator and charge state verifier | Keiichiro Ohkawa, Ryohei NAKAO, Youhei Kawahara, Yoshinori Aoshima | 2017-06-27 |
| 9685807 | Battery control device | Ryouhei Nakao, Shinji Imai, Keiichiro Ohkawa, Takahiro Soma | 2017-06-20 |
| 9537325 | Battery state estimation system, battery control system, battery system, and battery state estimation method | Keiichiro Ohkawa | 2017-01-03 |