Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7840334 | Engine control system | Shinji Nakagawa, Kazuhiko Kanetoshi, Kozo Katogi, Takanobu Ichihara | 2010-11-23 |
| 7565238 | Engine control device | Shinji Nakagawa, Kazuhiko Kanetoshi, Kozo Katogi, Takanobu Ichihara | 2009-07-21 |
| 6519513 | Hybrid vehicle control apparatus | Shinji Nakagawa, Masami Nagano, Hiroyuki Takamura | 2003-02-11 |
| 6502549 | Engine combustion control device | Masatoshi Hoshino, Nobuo Kurihara, Toshiharu Nogi, Yutaka Takaku | 2003-01-07 |
| 5937637 | System for purifying exhaust gas for use in an automobile | Masakatsu Fujishita, Takeshi Atago, Akio Honji, Osamu Kuroda, Toshio Ogawa +1 more | 1999-08-17 |
| 5560201 | System for purifying exhaust gas for use in an automobile | Masakatsu Fujishita, Takeshi Atago, Akio Honji, Osamu Kuroda, Toshio Ogawa +1 more | 1996-10-01 |
| 5388405 | System for purifying exhaust gas for use in an automobile | Masakatsu Fujishita, Takeshi Atago, Akio Honji, Osamu Kuroda, Toshio Ogawa +1 more | 1995-02-14 |
| 4951212 | Automobile driving guide apparatus | Nobuo Kurihara, Hideharu Takahashi, Akira Endo | 1990-08-21 |
| 4882030 | Air-fuel ratio detection system for engine exhaust gas | Seikoo Suzuki, Masayuki Miki, Takao Sasayama, Yoshishige Oyama | 1989-11-21 |
| 4825838 | Air/fuel ratio control apparatus for an internal combustion engine | Yoshishige Oyama | 1989-05-02 |
| 4751907 | Air/fuel ratio detecting apparatus for internal combustion engines | Tadahiro Yamamoto, Eiichi Ohnishi, Tadaki Oota, Hiroaki Oogane, Yoshishige Oyama | 1988-06-21 |
| 4748953 | Air/fuel ratio control apparatus for internal combustion engines | Yoshishige Oyama | 1988-06-07 |
| 4716760 | Air-fuel ratio detection system | Yoshishige Oyama | 1988-01-05 |
| 4629535 | Method for detecting an air-fuel ratio | Yoshishige Oyama | 1986-12-16 |
| 4622125 | Oxygen concentration control system | Yoshishige Oyama, Tadashi Kirisawa | 1986-11-11 |
| 4534330 | Air/fuel ratio detector | Yoshishige Oyama | 1985-08-13 |
| 4424568 | Method of controlling internal combustion engine | Yutake Nishimura, Yoshishige Oyama, Hiroshi Kuroiwa | 1984-01-03 |
| 4417558 | Fuel feeding apparatus for internal combustion engine | Yoshishige Oyama, Mamoru Fujida | 1983-11-29 |
| 4400974 | Intake air amount detecting system for internal combustion engines | Yutaka Nishimura, Yoshishige Oyama, Tadashi Kirisawa, Hiroshi Kuroiwa, Yasunori Mouri | 1983-08-30 |