Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7909916 | Maintenance method for particulate filter | Toshikatsu Muramatsu, Eiji Kunishima, Jun Ozawa | 2011-03-22 |
| 7470312 | Exhaust emission control device | Hiroshi Endou | 2008-12-30 |