Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4785776 | Diesel engine having shaped flame dispersing recess in piston crown | Toshiaki Tanaka, Motohiro Shinzawa | 1988-11-22 |
| 4574589 | Exhaust particle removing system for an internal combustion engine | Yoji Hasegawa | 1986-03-11 |
| 4541239 | Exhaust purification apparatus | Yoji Hasegawa | 1985-09-17 |
| 4424671 | Exhaust gas particle burning method and apparatus for an internal combustion engine | — | 1984-01-10 |