Issued Patents All Time
Showing 51–73 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5852228 | Apparatus and method for controlling oxygen sensor heating | Yukihiro Yamashita, Jun Hasegawa | 1998-12-22 |
| 5806306 | Deterioration monitoring apparatus for an exhaust system of an internal combustion engine | Yoshiyuki Okamoto, Yasumasa Kaji | 1998-09-15 |
| 5771688 | Air-fuel ratio control apparatus for internal combustion engines | Jun Hasegawa | 1998-06-30 |
| 5762055 | Air-to-fuel ratio control apparatus for an internal combustion engine | Yukihiro Yamashita | 1998-06-09 |
| 5758632 | Diagnostic apparatus for air-fuel ratio sensor | Yukihiro Yamashita, Yasuo Sagisaka | 1998-06-02 |
| 5730111 | Air-fuel ratio control system for internal combustion engine | Yasumasa Kaji, Yoshiyuki Okamoto | 1998-03-24 |
| 5727383 | Catalyst deterioration detecting apparatus and exhaust emission control device failure detecting apparatus | Yukihiro Yamashita, Masaaki Nakayama | 1998-03-17 |
| 5711272 | Fuel property detection for an engine using engine speed | Yoshinori Maegawa | 1998-01-27 |
| 5672817 | Self-diagnostic apparatus of air-fuel ratio control system of internal combustion engine | Yasuo Sagisaka, Masaaki Nakayama, Yasuo Mukai, Yukihiro Yamashita | 1997-09-30 |
| 5501204 | Assist air control apparatus for internal combustion engine | Yukihiro Yamashita, Keiji Honjoh | 1996-03-26 |
| 5487372 | Malfunctional detecting apparatus for an assist air control system for internal combustion engines | Keiji Honjoh | 1996-01-30 |
| 5460148 | Assist air control system for internal combustion engine | Toshihiro Suzumura, Keigi Honjoh, Kenji Ikuta, Shigenori Isomura | 1995-10-24 |
| 5419299 | Self-diagnosis apparatus and method for fuel evaporative emission | Osamu Fukasawa | 1995-05-30 |
| 5406919 | Fuel injection system for internal combustion engine | Kenji Ikuta, Takanori Takahashi | 1995-04-18 |
| 5400761 | Air-fuel ratio control apparatus of internal combustion engine | Osamu Fukasawa, Junya Morikawa | 1995-03-28 |
| 5363832 | Fuel vapor purging control system with air/fuel ratio compensating system for internal combustion engine | Toshihiro Suzumura, Toshio Kondo, Shigenori Isomura | 1994-11-15 |
| 5357934 | Apparatus for controlling pressure within fuel tank | Yasuo Tagawa | 1994-10-25 |
| 5317909 | Abnormality detecting apparatus for use in fuel transpiration prevention systems | Jun Yamada, Shuji Sakakibara, Yoshihiro Okuda, Tomomi Eino, Kiyoshi Nagata +1 more | 1994-06-07 |
| 5313395 | Speed control system for an internal combustion engine | Katsuhiko Kawai, Tasunori Kato, Katsuhiko Nakabayashi, Shigenori Isomura, Toshio Kondo | 1994-05-17 |
| 5284050 | Self-diagnosis apparatus in system for prevention of scattering of fuel evaporation gas | Toshihiro Suzumura, Toshio Kondo, Shigenori Isomura | 1994-02-08 |
| 5259353 | Fuel evaporative emission amount detection system | Kazuhiro Nakai, Akihiro Nakashima | 1993-11-09 |
| 5259355 | Gaseous fuel flow rate detecting system | Akihiro Nakashima, Shigenori Isomura, Hideki Koseki, Takao Tsuji | 1993-11-09 |
| 5216991 | Internal combustion engine controller | Shigenori Isomura, Junya Morikawa | 1993-06-08 |