Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684386 | Charging method of a secondary battery | — | 1997-11-04 |
| 5627452 | Charging method of secondary battery | — | 1997-05-06 |
| 5606240 | Battery charger | Toshiharu Kokuga, Mikitaka Tamai | 1997-02-25 |