Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5961931 | Particulate trap | Tomohiko Ihara, Yoichi Nagai, Kiyoshi Kobashi, Hiromichi Yanagihara | 1999-10-05 |
| 5863311 | Particulate trap for diesel engine | Youichi Nagai, Tomohiko Ihara, Kiyoshi Kobashi, Hiromichi Yanagihara | 1999-01-26 |
| 5851249 | Particulate trap for a diesel engine | Yoshimitu Henda, Kiyoshi Kobashi, Yoshimasa Watanabe, Yasushi Araki, Youichi Nagai | 1998-12-22 |