Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6401451 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Yushihisa Iwaki, Tadashi Satoh | 2002-06-11 |
| 6389804 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Yoshihisa Iwaki, Tadashi Satoh | 2002-05-21 |
| 6378296 | Degradation discrimination system of internal combustion engine exhaust gas purification system | Yuji Yasui, Yoshihisa Iwaki | 2002-04-30 |