Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9951395 | Method for strengthening steel plate member | Koji Shimotsu, Katsushi Osumi | 2018-04-24 |
| 5437317 | Ventilation line opening/closing means of fuel tank | Seiichi Takatsuka, Kyokuichi Sato | 1995-08-01 |