Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 5088281 | Method and apparatus for determining deterioration of three-way catalysts in double air-fuel ratio sensor system | Takahide Izutani, Nobuaki Kayanuma, Michio Furuhashi, Yukihiro Sonoda, Hiroyuki Sawamoto +2 more | 1992-02-18 |
| 4745741 | Double air-fuel ratio sensor system having improved response characteristics | Takatoshi Masui, Toshinari Nagai, Toshiyasu Katsuno, Yoshiki Chujo, Nobuaki Kayanuma +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, Toshinari Nagai, Takatoshi Masui, Yoshiki Chujo, Yasushi Sato +2 more | 1988-03-08 |
| 4703619 | Double air-fuel ratio sensor system having improved response characteristics | Yoshiki Chujo, Nobuaki Kayanuma, Takatoshi Masui, Toshiyasu Katsuno, Toshio Tanahashi | 1987-11-03 |
| 4693076 | Double air-fuel ratio sensor system having improved response characteristics | Yoshiki Chujo, Nobuaki Kayanuma, Takatoshi Masui, Toshinari Nagai, Toshiyasu Katsuno +1 more | 1987-09-15 |
| 4528963 | Method of and system for controlling restart of engine | Yuuichi Takano, Katsuhiko Aoyama | 1985-07-16 |
| 4446823 | Internal combustion engine passage construction with intake tubes extending along surge tank wall | — | 1984-05-08 |
| 4391243 | Method and apparatus of supplying fuel in electronic control fuel injection engine | — | 1983-07-05 |
| 4186697 | Exhaust gas purification promoting device | Yushiro Yasuda | 1980-02-05 |