Issued Patents All Time
Showing 51–75 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6874315 | Exhaust gas purification device | Koichiro Nakatani, Shinya Hirota, Kazuhiro Itoh, Koichi Kimura, Kiyoshi Nakanishi +1 more | 2005-04-05 |
| 6837043 | Device for purifying the exhaust gas of an internal combustion engine | Koichiro Nakatani, Shinya Hirota, Yoshimitsu Henda, Kazuhiro Itoh, Koichi Kimura +3 more | 2005-01-04 |
| 6834496 | Exhaust gas purifying apparatus for internal combustion engine and control method thereof | Koichiro Nakatani, Toshiaki Tanaka, Shinya Hirota, Shunsuke Toshioka, Koichi Kimura +1 more | 2004-12-28 |
| 6823664 | Exhaust gas purification device | Koichiro Nakatani, Shinya Hirota, Akira Mikami, Toshiaki Tanaka, Koichi Kimura +1 more | 2004-11-30 |
| 6823665 | Exhaust gas purification device | Shinya Hirota, Toshiaki Tanaka, Kazuhiro Itoh, Koichiro Nakatani, Koichi Kimura | 2004-11-30 |
| 6820418 | Exhaust gas purification apparatus | Koichiro Nakatani, Toshiaki Tanaka, Shinya Hirota, Kazuhiro Itoh | 2004-11-23 |
| 6729126 | Internal combustion engine having variable valve control system and NOx catalyst | Makoto Ogiso, Shouji Katsumata, Kazuhiko Shiratani, Keiji Yoeda, Hideyuki Nishida +3 more | 2004-05-04 |
| 6681566 | Exhaust purifying method and apparatus of an internal combustion engine | Kazuhiro Itoh, Toshiaki Tanaka, Shinya Hirota, Koichi Kimura, Koichiro Nakatani | 2004-01-27 |
| 6672050 | Exhaust gas purification device of an engine | Hiroki Murata, Toshio Suematsu, Shizuo Sasaki, Kohei Igarashi, Shinya Hirota +5 more | 2004-01-06 |
| 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 |
| 6477834 | Exhaust emission controlling apparatus of internal combustion engine | Kenji Katoh, Masato Goto | 2002-11-12 |
| 6381952 | Exhaust temperature raising apparatus and method for internal combustion engine | Shinya Hirota, Shunsuke Toshioka, Nobumoto Ohashi | 2002-05-07 |
| 6370869 | Exhaust purification device of an engine | Shinya Hirota, Shunsuke Toshioka, Toshiaki Tanaka | 2002-04-16 |
| 5974794 | Exhaust gas purification device for an internal combustion engine | Masato Gotoh, Kenji Katoh | 1999-11-02 |
| 5848529 | Apparatus and method for purifying exhaust gas in an internal combustion engine | Kenji Katoh, Masato Gotoh | 1998-12-15 |
| 5735119 | Exhaust purification device of an engine | Tetsuro Kihara, Kenji Katoh, Satoshi Iguchi | 1998-04-07 |