Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7922004 | Diesel filter | Yoshiharu Matsushita, Yasuji Nishi, Satoshi Nagata | 2011-04-12 |
| 7906022 | Diesel filter | Yoshiharu Matsushita, Yasuji Nishi, Satoshi Nagata | 2011-03-15 |
| 7543561 | Swirl generator | Masumi Shibata, Kazushige Maruyama, Toshio Hayashi | 2009-06-09 |