Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |