Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6495288 | Lead-acid battery having tin in positive active material and silica in separator | Masaaki Shiomi, Yuichi Okada | 2002-12-17 |
| 6225005 | Lead-acid battery and producing method thereof | Masaaki Shiomi, Yuichi Okada | 2001-05-01 |