Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5111796 | Evaporative fuel control system | — | 1992-05-12 |
| 5054460 | Exhaust gas recirculation system | — | 1991-10-08 |
| 4187811 | Exhaust gas recirculation system of an internal combustion engine | Kenji Katoh | 1980-02-12 |