Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6551721 | Surface-treated steel sheet for battery case, battery case comprising the same, methods for producing them, and battery | Hitoshi Ohmura, Tatsuo Tomomori, Hideo Ohmura | 2003-04-22 |