Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823665 | Exhaust gas purification device | Shinya Hirota, Toshiaki Tanaka, Takamitsu Asanuma, Koichiro Nakatani, Koichi Kimura | 2004-11-30 |
| 6820418 | Exhaust gas purification apparatus | Koichiro Nakatani, Toshiaki Tanaka, Shinya Hirota, Takamitsu Asanuma | 2004-11-23 |
| 6786041 | Exhaust gas purification method and exhaust gas purification apparatus | Toshiaki Tanaka, Shinya Hirota, Koichi Kimura, Koichiro Nakatani | 2004-09-07 |
| 6769245 | Exhaust gas purification method | Toshiaki Tanaka, Shinya Hirota, Koichi Kimura, Koichiro Nakatani | 2004-08-03 |
| 6725651 | Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent | Toshiaki Tanaka, Shinya Hirota, Koichiro Nakatani, Shigeki Daido, Naohisa Oyama | 2004-04-27 |
| 6681566 | Exhaust purifying method and apparatus of an internal combustion engine | Toshiaki Tanaka, Shinya Hirota, Takamitsu Asanuma, 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 |