Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484493 | Exhaust emission control device for internal combustion engine | — | 2002-11-26 |
| 6338243 | Exhaust emission control system for internal combustion engine | Nobuaki Takaoka | 2002-01-15 |