Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499290 | Engine exhaust purification device | Takeshi Nakamura, Shigeaki Kakizaki, Masatomo Kakuyama, Osamu Matsuno | 2002-12-31 |
| 6494037 | Engine exhaust purification device | Hajime Oguma | 2002-12-17 |
| 6334306 | Exhaust gas purification apparatus in combustion engine | Kouichi Mori, Kimiyoshi Nishizawa | 2002-01-01 |