Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6041499 | Method for manufacturing a cylinder for two-stroke internal combustion engine and the cylinder manufactured thereby | Fujihiro Matsuura, Minoru Yonekawa | 2000-03-28 |
| 5211153 | Two-cycle internal combustion gasoline engine cylinder | Minoru Yonekawa, Yoshiaki Nagao, Yasuharu Sato, Isao Masuda | 1993-05-18 |