Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11101660 | Storage battery system and power display device | Tetsuo Akita | 2021-08-24 |
| 10481184 | Input-voltage-abnormality detection method and power source device | Tetsuo Akita, Koichi Takeshita | 2019-11-19 |
| 10476259 | Power conversion device and method for determining operational state of breaking device | Toshiaki Okumura, Naoki Ayai, Koichi Takeshita, Shinjirou Shinada, Tadatsugu Udono | 2019-11-12 |