Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6692869 | Surface-treated steel sheet for battery case, method of production thereof, battery case formed by the steel sheet and battery using the case | Hitoshi Ohmura, Hideo Ohmura, Keiji Yamane | 2004-02-17 |