Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9708946 | Diesel particulate filter and exhaust gas purification device | Takahiro Kogawa | 2017-07-18 |
| 7781367 | Exhaust gas cleaning catalyst and process for producing the same | Hitoshi Kubo, Shunji Kikuhara | 2010-08-24 |