Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630815 | Battery protective circuit with current-amount control circuit | Hiroichi Ishida | 2003-10-07 |
| 6531246 | Plate-shaped battery and battery apparatus | Hiroichi Ishida | 2003-03-11 |