Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6189460 | Combustion system for sooty smoke generating facilities | Yoshiharu Abe, Yoshiyasu Fukui, Noriyuki Yamada, Setsuo Kikuchi, Yoshinori Akagawa | 2001-02-20 |
| 5823167 | Control system for internal combustion engines | Hironao Fukuchi, Kenji Nakano, Katsuhiro Kumagai, Yoshihisa Hara | 1998-10-20 |
| 5591406 | Automatic exhaust gas analyzer for an internal combustion engine | Kenji Hirai, Akira Aono, Shinya Tsuneda, Hirokazu Matsumoto, Yuji Yamashita +2 more | 1997-01-07 |
| 4870586 | Air-fuel ratio control system for an internal combustion engine with an engine load responsive correction operation | Masahiko Asakura, Masahiro Ueda, Shinichi Kubota, Tomohiko Kawanabe, Noritaka Kushida +1 more | 1989-09-26 |
| 4804454 | Oxygen concentration sensing apparatus | Masahiko Asakura, Yasunari Seki, Minoru Muroya | 1989-02-14 |
| 4763265 | Air intake side secondary air supply system for an internal combustion engine with an improved duty ratio control operation | Tomohiko Kawanabe, Masahiko Asakura, Noritaka Kushida, Yasunari Seki, Minoru Muroya | 1988-08-09 |
| 4762604 | Oxygen concentration sensing apparatus | Masahiko Asakura, Noritaka Kushida, Shin'ichi Kubota | 1988-08-09 |
| 4757683 | Exhaust gas recirculation method for internal combustion engines | Tomohiko Kawanabe, Katsuhiko Kimura, Masahiko Asakura | 1988-07-19 |
| 4752883 | Method for directing an up-shift operation for a vehicle having a manual transmission | Masahiko Asakura, Noritaka Kushida, Katsuhisa Amano, Hiroshi Hasebe, Tomohiko Kawanabe +1 more | 1988-06-21 |
| 4705012 | Air intake side secondary air supply system for an internal combustion engine with a duty ratio control operation | Tomohiko Kawanabe, Masahiko Asakura, Noritaka Kushida, Minoru Muroya | 1987-11-10 |
| 4690121 | Air intake side secondary air supply system for an internal combustion engine with a duty ratio control operation | Tomohiko Kawanabe, Masahiko Asakura, Yukihiro Matsumoto, Minoru Muroya | 1987-09-01 |
| 4649882 | Air intake side secondary air supply system for an internal combustion engine equipped with a fuel increment control system | Tomohiko Kawanabe, Masahiko Asakura, Katsuhiko Kimura | 1987-03-17 |