Issued Patents 2002
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6449943 | Method of evaluating deteriorated state of catalytic converter for purifying exhaust gas | Masaki Ueno, Shusuke Akazaki | 2002-09-17 |
| 6449944 | Method of judging deterioration of emission gas control catalyst device | Yuji Yasui, Shusuke Akazaki, Tadashi Satoh, Masaki Ueno | 2002-09-17 |
| 6389804 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Tadashi Satoh, Masahiro Satoh | 2002-05-21 |
| 6378296 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Masahiro Satoh | 2002-04-30 |
| 6370473 | Air-fuel ratio control apparatus for multicylinder internal combustion engine | Yuji Yasui, Shusuke Akazaki | 2002-04-09 |
| 6354076 | Exhaust gas purification system of internal combustion engine | Yuji Yasui, Shusuke Akazaki, Tadashi Satoh, Masaki Ueno, Takashi Haga +1 more | 2002-03-12 |