Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6528213 | Storage battery | Yasuyuki Yoshihara, Kazuyoshi Yonezu, Fumiaki Seta | 2003-03-04 |
| 6291104 | Storage battery | Yasuyuki Yoshihara, Kazuyoshi Yonezu, Fumiaki Seta | 2001-09-18 |
| 6243932 | Manufacturing method of expanded grid and its manufacturing apparatus | Akira Iwamura | 2001-06-12 |
| 6037081 | Expanded grid for electrode plate of lead-acid battery | Yasuyuki Yoshihara | 2000-03-14 |