Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4222355 | Exhaust gas recirculation apparatus for an internal combustion engine | Tatsumi Yamasaki, Isamu Ota, Yutaka Hasegawa, Heisuke Yamamoto, Noriaki Kawai | 1980-09-16 |
| 4222357 | Exhaust gas recirculation system for an internal combustion engine | Isamu Ota | 1980-09-16 |