Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490778 | Multiple uneven plate, multiple uneven plate bending mold, multiple uneven plate manufacturing method and separator using multiple uneven plate | Kouichi Ikushima, Kouji Shimoda | 2002-12-10 |