Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8475958 | Nickel hydrogen storage battery and method for manufacturing negative electrode thereof | Takashi Okawa, Kenichi Aoki, Hiroyuki Usui, Kimihiro Imamura | 2013-07-02 |
| 8389159 | Nickel metal hydride rechargeable battery and method for manufacturing negative electrode thereof | Takashi Okawa, Kenichi Aoki, Hiroyuki Usui | 2013-03-05 |