Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630115 | Exhaust emission control process for internal combustion engines | Masato Kaneeda, Kojiro Okude, Hidehiro Iizuka, Toshio Ogawa, Kousei Nagayama +4 more | 2003-10-07 |
| 6596247 | Method for purifying exhaust gas from internal combustion engines | Hidehiro Iizuka, Ryouta Doi, Hiroshi Hanaoka, Toshio Ogawa, Hisao Yamashita +3 more | 2003-07-22 |
| 6517784 | Exhaust gas purifying apparatus for an internal combustion engine | Hidehiro Iizuka, Toshio Ogawa, Akira Kato, Hiroshi Miyadera, Yuichi Kitahara +1 more | 2003-02-11 |