Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829889 | Exhaust gas cleaning device for internal combustion engine | Makoto Saito, Shigeto Yahata, Tsukasa Kuboshima | 2004-12-14 |
| 6758039 | Exhaust gas cleaning system having particulate filter | Tsukasa Kuboshima, Makoto Saito, Shigeto Yahata, Masumi Kinugawa | 2004-07-06 |