Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4442808 | Combustion chamber for spark ignition internal combustion engine | Saburo Tsutsumi, Kichihiko Dozono, Yutaka Matayoshi | 1984-04-17 |
| 4366788 | Internal combustion engine | Toshiaki Tanaka | 1983-01-04 |
| 4313410 | Internal combustion engine with fuel injector | Saburo Tsutsumi, Shizuo Ishizawa | 1982-02-02 |
| 4269153 | Internal combustion engine with fuel injector | Saburo Tsutsumi, Shizuo Ishizawa | 1981-05-26 |
| 4257372 | Internal combustion engine exhaust passage structure | Yukihiro Etoh, Toshiaki Tanaka | 1981-03-24 |
| 4196701 | Internal combustion engine intake system having auxiliary passage bypassing main throttle to produce swirl in intake port | Masayuki Tamura | 1980-04-08 |