Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5228286 | Air-fuel ratio control device of engine | — | 1993-07-20 |
| 5022225 | Air-fuel ratio feedback control system including at least downstream-side air fuel ratio sensor | Hiroshi Sawada, Tatehito Ueda, Kiyoshi Nakanishi | 1991-06-11 |
| 4964271 | Air-fuel ratio feedback control system including at least downstream-side air-fuel ratio sensor | Hiroshi Sawada, Tatehito Ueda, Kiyoshi Nakanishi | 1990-10-23 |
| 4881368 | Double air-fuel ratio sensor system having improved exhaust emission characteristics | Kohei Igarashi | 1989-11-21 |
| 4811557 | Double air-fuel ratio sensor system having improved exhaust emission characteristics | Atsuo Okumura | 1989-03-14 |
| 4391256 | Air-fuel ratio control apparatus | Hiroshi Sawada | 1983-07-05 |
| 4364227 | Feedback control apparatus for internal combustion engine | Seietsu Yoshida, Yukihide Niimi, Massao Ito, Hiroshi Sawada | 1982-12-21 |