Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5219685 | Alkaline manganese cell | Koji Koide, Tsugiyasu Iwamaru | 1993-06-15 |
| 4238555 | Leak-proof alkaline cell and its production | Yoshio Uetani, Kenichi Yokoyama, Seiichi Matsushima, Sonae Kirihara | 1980-12-09 |
| 4220694 | Leak-proof alkaline cell and its production | Yoshio Uetani, Kenichi Yokoyama, Seiichi Matsushima | 1980-09-02 |