Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5562068 | Compression ratio changing device in internal combustion engine | Mitsuru Sugimoto, Takashi Moriya | 1996-10-08 |
| 5233950 | Valve operating system for internal combustion engine | Atsushi Umemoto, Kazuji Ono, Kiwamu Bushimata | 1993-08-10 |