Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074446 | Exhaust gas purification system for internal combustion engine | Takamitsu Asanuma, Morio Narita | 2011-12-13 |
| 7891172 | Purification capacity recovery method of exhaust gas emission control system | Kuniaki Niimi | 2011-02-22 |
| RE42156 | Exhaust emission control system of an internal combustion engine | Shinya Hirota, Toshiaki Tanaka, Satoshi Iguchi | 2011-02-22 |