Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883366 | Temperature sensor | Katsuji Dohi, Akira Kumada | 1989-11-28 |
| 4833390 | Charge completion detector | Akira Kumada, Nobuhiro Itoh, Norimitsu Kitoh | 1989-05-23 |
| 4803597 | Electric double-layer capacitor | Kouichi Watanabe, Michinobu Maesaka | 1989-02-07 |