Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6503647 | Battery protection device and method of making same | Akitsugu Sugiyama, Eiji Teshima, Hirotoshi Tsuchiya | 2003-01-07 |
| 6281780 | Electrical apparatus having improved electrical contact and electrical contact used therewith | Akitsugu Sugiyama, Harumi Kitada | 2001-08-28 |