Issued Patents 2004
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834496 | Exhaust gas purifying apparatus for internal combustion engine and control method thereof | Toshiaki Tanaka, Shinya Hirota, Takamitsu Asanuma, Shunsuke Toshioka, Koichi Kimura +1 more | 2004-12-28 |
| 6823665 | Exhaust gas purification device | Shinya Hirota, Toshiaki Tanaka, Kazuhiro Itoh, Takamitsu Asanuma, Koichi Kimura | 2004-11-30 |
| 6823664 | Exhaust gas purification device | Shinya Hirota, Akira Mikami, Toshiaki Tanaka, Takamitsu Asanuma, Koichi Kimura +1 more | 2004-11-30 |
| 6820418 | Exhaust gas purification apparatus | Toshiaki Tanaka, Shinya Hirota, Kazuhiro Itoh, Takamitsu Asanuma | 2004-11-23 |
| 6820845 | Tripod | — | 2004-11-23 |
| 6786041 | Exhaust gas purification method and exhaust gas purification apparatus | Kazuhiro Itoh, Toshiaki Tanaka, Shinya Hirota, Koichi Kimura | 2004-09-07 |
| 6769245 | Exhaust gas purification method | Kazuhiro Itoh, Toshiaki Tanaka, Shinya Hirota, Koichi Kimura | 2004-08-03 |
| 6761501 | Telescoping device and tripod | — | 2004-07-13 |
| 6739559 | Panhead | — | 2004-05-25 |
| 6725651 | Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent | Kazuhiro Itoh, Toshiaki Tanaka, Shinya Hirota, Shigeki Daido, Naohisa Oyama | 2004-04-27 |
| 6681566 | Exhaust purifying method and apparatus of an internal combustion engine | Kazuhiro Itoh, Toshiaki Tanaka, Shinya Hirota, Takamitsu Asanuma, Koichi Kimura | 2004-01-27 |
| 6679052 | Emission control apparatus | Shinya Hirota | 2004-01-20 |