Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8826730 | Method of diagnosing regeneration failure of exhaust emission control device | Wataru Koizumi, Hironori Narita | 2014-09-09 |
| 8327626 | Exhaust emission control device | Hironori Narita | 2012-12-11 |