Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884066 | Deterioration detector system for catalyst in use for emission gas purifier | Toshiki Sawada | 1989-11-28 |
| 4843248 | Mixing ratio sensor for liquid fuel | Yoshihiro Matsubara | 1989-06-27 |
| 4824244 | Sensor for mixing ratio of gasoline and alcohol or the like | Yoshihiro Matsubara | 1989-04-25 |