Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833214 | Multiple uneven plate and separator using multiple uneven plate | Kouichi Ikushima, Kouji Shimoda | 2004-12-21 |
| 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 |