Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279114 | Apparatus for detecting deterioration of catalyst of internal combustion engine | Shuji Sakakibara, Hideki Suzuki, Katsuhiko Kodama | 1994-01-18 |
| 5220788 | Apparatus for detecting purification factor of catalyst in catalytic converter of internal combustion engine | Katsuhiko Nakabayashi | 1993-06-22 |
| 5154054 | Apparatus for detecting deterioration of oxygen sensor | Hiroaki Nakane | 1992-10-13 |
| 5154055 | Apparatus for detecting purification factor of catalyst | Hiroaki Nakane, Katsuhiko Nakabayashi | 1992-10-13 |
| 5115781 | Air-fuel ratio controller for internal combustion engine | Masakazu Ninomiya, Kazunori Kishita | 1992-05-26 |
| 5101625 | Apparatus for controlling air-fuel ratio using air-fuel ratio sensor associated with heater | Tadashi Sugino, Michio Furuhashi | 1992-04-07 |