Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8298704 | Battery gasket and alkaline battery using the same | Susumu Kato | 2012-10-30 |
| 8017266 | Battery having positive temperature coefficient element | Susumu Kato, Yasushi Sumihiro | 2011-09-13 |
| 7534526 | Alkaline battery | Yasuhiko Shoji, Yasushi Sumihiro | 2009-05-19 |
| 7517611 | Alkaline dry battery | Seiji Wada, Yasushi Sumihiro, Yasuhiko Syoji | 2009-04-14 |