Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4210105 | Internal combustion engine injected accumulation chamber | Sumio Ito, Hisashi Oki | 1980-07-01 |
| 4203399 | Exhaust gas recirculation system | Shigefumi Nakamura, Hiromi Tokuda | 1980-05-20 |
| 4196706 | Exhaust gas recirculation system for internal combustion engine | Tokio Kohama, Hideki Obayashi, Tadashi Ozaki | 1980-04-08 |
| 4191135 | Combustion chamber of an internal combustion engine | Sumio Ito, Hisashi Ohki | 1980-03-04 |
| 4191144 | Method for controlling ignition timing in an internal combustion engine | Kiyoshi Kobashi, Jiro Nakano | 1980-03-04 |
| 4181110 | Exhaust gas recirculation system for internal combustion engine | Tokio Kohama, Hideki Obayashi, Tadashi Ozaki | 1980-01-01 |