Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933076 | Heat dissipating battery pack | Hiroki Takeshima, Ryoichi Hamasaki, Osamu Aoya, Takehiro Chinen | 2005-08-23 |
| 6692864 | Battery pack and power tool using the same | Yoshitaka Dansui, Sadaaki Yokoo, Michio Hirota | 2004-02-17 |
| 6388426 | Battery power source protecting device for an electromotive device | Sadaaki Yokoo, Kenji Tanaka, Kanako Kasai | 2002-05-14 |