Issued Patents 2003
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668548 | Exhaust emission control device of internal combustion engine | Shinya Hirota, Shunsuke Toshioka, Toshiaki Tanaka | 2003-12-30 |
| 6655133 | Exhaust gas purifier for internal combustion engine | Akira Mikami, Shinya Hirota, Kazuhiro Itoh, Koichi Kimura, Shunsuke Toshioka +4 more | 2003-12-02 |
| 6644022 | Exhaust gas purification device of internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Kazuhiro Itoh, Koichiro Nakatani, Koichi Kimura | 2003-11-11 |
| 6644023 | Exhaust emission control device of internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Kazuhiro Itoh, Koichiro Nakatani, Koichi Kimura | 2003-11-11 |
| 6634167 | Exhaust temperature raising apparatus and method for internal combustion engine | Shunsuke Toshioka, Shinya Hirota, Toshiaki Tanaka | 2003-10-21 |
| 6594991 | Exhaust purifying method and apparatus of an internal combustion engine | Kazuhiro Itoh, Toshiaki Tanaka, Shinya Hirota, Koichi Kimura, Koichiro Nakatani | 2003-07-22 |
| 6568178 | Device for purifying the exhaust gas of an internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Koichiro Nakatani, Kazuhiro Itoh, Koichi Kimura | 2003-05-27 |
| 6546721 | Exhaust gas purification device | Shinya Hirota, Toshiaki Tanaka, Kazuhiro Itoh, Koichiro Nakatani, Koichi Kimura | 2003-04-15 |
| 6519933 | Internal combustion engine having variable valve control system and NOx catalyst | Makoto Ogiso, Shouji Katsumata, Kazuhiko Shiratani, Keiji Yoeda, Hideyuki Nishida +3 more | 2003-02-18 |
| 6510686 | Exhaust gas purifier for internal combustion engine and method for purifying exhaust gas | Koichi Kimura, Toshiaki Tanaka, Shinya Hirota, Kazuhiro Itoh, Koichiro Nakatani | 2003-01-28 |