Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8890483 | Protection circuit, battery pack and charging system | Toshiyuki Nakatsuji, Toshiaki Ishikawa | 2014-11-18 |
| 8648572 | Protection circuit and battery pack | Toshiyuki Nakatsuji, Takahisa Otsu | 2014-02-11 |
| 8183832 | Charging system, charger, and battery pack | Takahisa Otsu | 2012-05-22 |