Issued Patents 2003
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6655133 | Exhaust gas purifier for internal combustion engine | Akira Mikami, Shinya Hirota, Takamitsu Asanuma, Koichi Kimura, Shunsuke Toshioka +4 more | 2003-12-02 |
| 6644022 | Exhaust gas purification device of internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Takamitsu Asanuma, Koichiro Nakatani, Koichi Kimura | 2003-11-11 |
| 6644023 | Exhaust emission control device of internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Takamitsu Asanuma, Koichiro Nakatani, Koichi Kimura | 2003-11-11 |
| 6594991 | Exhaust purifying method and apparatus of an internal combustion engine | Toshiaki Tanaka, Shinya Hirota, Takamitsu Asanuma, Koichi Kimura, Koichiro Nakatani | 2003-07-22 |
| 6588204 | Device for purifying the exhaust gas of an internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Koichiro Nakatani, Koichi Kimura | 2003-07-08 |
| 6568178 | Device for purifying the exhaust gas of an internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Koichiro Nakatani, Takamitsu Asanuma, Koichi Kimura | 2003-05-27 |
| 6546721 | Exhaust gas purification device | Shinya Hirota, Toshiaki Tanaka, Koichiro Nakatani, Koichi Kimura, Takamitsu Asanuma | 2003-04-15 |
| 6510686 | Exhaust gas purifier for internal combustion engine and method for purifying exhaust gas | Koichi Kimura, Toshiaki Tanaka, Shinya Hirota, Takamitsu Asanuma, Koichiro Nakatani | 2003-01-28 |