Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829889 | Exhaust gas cleaning device for internal combustion engine | Makoto Saito, Shigeto Yahata, Shinichiro Okugawa | 2004-12-14 |
| 6826903 | Exhaust gas recirculation system having cooler | Shigeto Yahata, Makoto Saito, Masumi Kinugawa, Kiyonori Sekiguchi | 2004-12-07 |
| 6758039 | Exhaust gas cleaning system having particulate filter | Shinichiro Okugawa, Makoto Saito, Shigeto Yahata, Masumi Kinugawa | 2004-07-06 |
| 6735941 | Exhaust gas purification system having particulate filter | Makoto Saito, Shigeto Yahata, Masumi Kinugawa, Kiyonori Sekiguchi | 2004-05-18 |