Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7229596 | Exhaust emission control device | Hidetoshi Ito, Kimiyoshi Nishizawa | 2007-06-12 |
| 6959242 | Engine fuel injection control device | Hiroshi Katoh | 2005-10-25 |
| 6922627 | Detection of engine rotation speed in spark ignition internal combustion engine | Hiroshi Katoh | 2005-07-26 |
| 6742495 | Engine control apparatus | Masaaki Ashida, Kouichi Mori, Yoshinao Ugomori | 2004-06-01 |
| 6722344 | Engine control apparatus | Masaaki Ashida, Kouichi Mori, Yoshinao Ugomori | 2004-04-20 |
| 6578551 | Fuel injection control for internal combustion engine | Masahiko Yuya, Hiroshi Katoh, Takahisa Koseki | 2003-06-17 |
| 6575150 | Ignition timing control device for internal combustion engine | Hiroshi Katoh, Masahiko Yuya | 2003-06-10 |
| 6571775 | Fuel injection control for start-up of internal combustion engine | Masahiko Yuya, Hiroshi Katoh, Takahisa Koseki | 2003-06-03 |
| 6568373 | Fuel injection control for start-up of internal combustion engine | Masahiko Yuya, Hiroshi Katoh, Takahisa Koseki | 2003-05-27 |
| 6568371 | Fuel injection control for internal combustion engine | Masahiko Yuya, Hiroshi Katoh, Takahisa Koseki | 2003-05-27 |
| 6499290 | Engine exhaust purification device | Takeshi Nakamura, Shigeaki Kakizaki, Masatomo Kakuyama, Osamu Matsuno | 2002-12-31 |
| 6494037 | Engine exhaust purification device | Hajime Oguma | 2002-12-17 |
| 6334306 | Exhaust gas purification apparatus in combustion engine | Kouichi Mori, Kimiyoshi Nishizawa | 2002-01-01 |
| 6303084 | Exhaust emission control device | Hidetoshi Ito, Kimiyoshi Nishizawa | 2001-10-16 |
| 6230489 | Emission control device for internal combustion engine | Mikio Tsuzuki, Kimiyoshi Nishizawa, Naoki Kachi | 2001-05-15 |
| 6220018 | Exhaust emission control device | Fuminori Yamanashi, Kimiyoshi Nishizawa, Mikio Tsuzuki | 2001-04-24 |
| 6192679 | Exhaust purification device and method for internal combustion engine | Takeshi Nakamura, Kimiyoshi Nishizawa | 2001-02-27 |
| 6185933 | Exhaust emission control device for engine | Mikio Tsuzuki, Kimiyoshi Nishizawa | 2001-02-13 |
| 6148611 | Engine air-fuel ratio controller and control method | — | 2000-11-21 |
| 6014962 | Engine air-fuel ratio controller | Kimiyoshi Nishizawa | 2000-01-18 |
| 5970966 | Engine air-fuel ratio controller | — | 1999-10-26 |
| 5953910 | Engine air-fuel ratio converter with means for determining the deterioration of the catalytic converter | Kimiyoshi Nishizawa | 1999-09-21 |
| 5570575 | Fuel delivery control apparatus for use with internal combustion engine | Kimiyoshi Nishizawa, Fuminori Yamanashi, Katsuhiro Shibata, Hideharu Ehara, Kaoru Ikeda +3 more | 1996-11-05 |
| 5557929 | Control system for internal combustion engine equipped with exhaust gas purifying catalyst | Kimiyoshi Nishizawa | 1996-09-24 |