Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620553 | Lithium secondary battery | Tohru Shiga, Akihiko Koiwai | 2003-09-16 |
| 6477024 | Fault determination apparatus and fault determination method for a battery set | Yoshiaki Kikuchi | 2002-11-05 |