Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5546917 | Apparatus for disposing of fuel vapor | Akinori Osanai, Hiroshi Kanai, Kenji Harima, Kazuhiko Iwano, Shuji Yuda | 1996-08-20 |
| 5481462 | Apparatus for determining an altitude condition of an automotive vehicle | — | 1996-01-02 |
| 5476081 | Apparatus for controlling air-fuel ratio of air-fuel mixture to an engine having an evaporated fuel purge system | Koji Okawa, Mitsuru Takada, Nobuyuki Kobayashi, Shuji Yuda, Kenji Harima +3 more | 1995-12-19 |
| 5392600 | System for controlling air-fuel ratio in internal combustion engine and method of the same | — | 1995-02-28 |
| 5148795 | Apparatus for controlling heater for oxygen sensor | Hiroshi Tanaka, Makoto Suzuki | 1992-09-22 |
| RE33942 | Double air-fuel ratio sensor system in internal combustion engine | Toshiyasu Katsuno, Nobuaki Kayanuma, Yasushi Sato, Toshio Tanahashi, Yoshiki Chujo +3 more | 1992-06-02 |
| 5111792 | Apparatus for controlling heater for oxygen sensor and fuel control apparatus using the same | Hiroshi Tanaka, Makoto Suzuki | 1992-05-12 |
| 4831838 | Double air-fuel ratio sensor system carrying out learning control operation | Takatoshi Masui, Yasushi Satou, Toshiyasu Katsuno | 1989-05-23 |
| 4823270 | Method and apparatus for controlling air-fuel ratio in internal combustion engine | — | 1989-04-18 |
| 4819427 | Double air-fuel ratio sensor system having improved exhaust emission characteristics | Takatoshi Masui, Toshiyasu Katsuno | 1989-04-11 |
| 4809501 | Double air-fuel ratio sensor system having improved exhaust emission characteristics | Nobuaki Kayanuma | 1989-03-07 |
| 4796425 | Double air-fuel ratio sensor system carrying out learning control operation | Nobuaki Kayanuma | 1989-01-10 |
| 4779414 | Double air-fuel ratio sensor system carrying out learning control operation | Takatoshi Masui, Toshiyasu Katsuno | 1988-10-25 |
| 4761950 | Double air-fuel ratio sensor system carrying out learning control operation | Takatoshi Masui, Yasushi Satou, Toshiyasu Katsuno | 1988-08-09 |
| 4747265 | Double air-fuel ratio sensor system having improved exhaust emission characteristics | Takatoshi Masui, Toshiyasu Katsuno | 1988-05-31 |
| 4745741 | Double air-fuel ratio sensor system having improved response characteristics | Takatoshi Masui, Toshiyasu Katsuno, Yoshiki Chujo, Nobuaki Kayanuma, Hironori Bessho +2 more | 1988-05-24 |
| 4739614 | Double air-fuel ratio sensor system in internal combustion engine | Toshiyasu Katsuno, Nobuaki Kayanuma, Yasushi Sato, Toshio Tanahashi, Yoshiki Chujo +3 more | 1988-04-26 |
| 4729219 | Double air-fuel ratio sensor system having improved response characteristics | Nobuaki Kayanuma, Takatoshi Masui, Yoshiki Chujo, Hironori Bessho, Yasushi Sato +2 more | 1988-03-08 |
| 4723408 | Double air-fuel ratio sensor system carrying out learning control operation | Takatoshi Masui, Yasushi Sato, Toshiyasu Katsuno | 1988-02-09 |
| 4712373 | Double air-fuel ratio sensor system having improved response characteristics | Takatoshi Masui, Yasushi Satou, Toshiyasu Katsuno | 1987-12-15 |
| 4707984 | Double air-fuel ratio sensor system having improved response characteristics | Toshiyasu Katsuno, Takatoshi Masui, Yasushi Satou | 1987-11-24 |
| 4707985 | Double air-fuel ratio sensor system carrying out learning control operation | Takatoshi Masui, Yasushi Sato, Toshiyasu Katsuno | 1987-11-24 |
| 4693076 | Double air-fuel ratio sensor system having improved response characteristics | Yoshiki Chujo, Nobuaki Kayanuma, Hironori Bessho, Takatoshi Masui, Toshiyasu Katsuno +1 more | 1987-09-15 |
| 4570590 | Internal combustion engine with multiple intake valves | Taiyo Kawai, Norihisa Nakagawa, Nobuaki Kayanuma | 1986-02-18 |