Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6449944 | Method of judging deterioration of emission gas control catalyst device | Yuji Yasui, Shusuke Akazaki, Yoshihisa Iwaki, Masaki Ueno | 2002-09-17 |
| 6401451 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Yushihisa Iwaki, Masahiro Satoh | 2002-06-11 |
| 6389804 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Yoshihisa Iwaki, Masahiro Satoh | 2002-05-21 |
| 6354076 | Exhaust gas purification system of internal combustion engine | Yuji Yasui, Shusuke Akazaki, Yoshihisa Iwaki, Masaki Ueno, Takashi Haga +1 more | 2002-03-12 |