Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952919 | Exhaust gas purifying system for internal combustion engine | Makoto Otake, Junichi Kawashima, Naoya Tsutsumoto, Takao Inoue, Toshimasa Koga | 2005-10-11 |
| 6928809 | Exhaust gas purification system and method | Takao Inoue, Junichi Kawashima, Naoya Tsutsumoto, Makoto Otake, Toshimasa Koga | 2005-08-16 |
| 6422004 | System for controlling engine | Akihide Takami, Tomomi Watanabe, Tomoaki Saito | 2002-07-23 |