Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285840 | Method and apparatus for manufacturing piston of internal combustion engine | Masamichi Hayashi, Yasuhiro Kawabata, Shiro Machida | 1994-02-15 |
| 4776075 | Method for manufacturing piston of internal combustion engine | Yasuhiro Kawabata, Naoki Minamoto, Soichi Hara | 1988-10-11 |