Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487851 | Exhaust emission control device of internal combustion engine | Kojiro Okada, Takashi Dogahara | 2002-12-03 |
| 6463734 | Exhaust emission control device of internal combustion engine | Osamu Nakayama, Tetsuya Watanabe, Kazuhito Kawashima | 2002-10-15 |