Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474147 | Exhaust-gas purification device for internal combustion engine | Hiroshi Oono | 2002-11-05 |
| 6393834 | Exhaust purifying apparatus for internal combustion engine | Hiroshi Oono | 2002-05-28 |
| 6338243 | Exhaust emission control system for internal combustion engine | Toshikatsu Takanohashi | 2002-01-15 |