Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6761995 | Coin-shaped battery | Takao Uyama, Daisuke Yoshida, Toshihiko Izumikawa, Yasushi Hirakawa | 2004-07-13 |
| 6696198 | Flat battery | Mitsugu Okahisa, Takao Uyama, Toshihiko Ikehata, Tetsuya Takeuchi | 2004-02-24 |