Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7931874 | Three-layered catalyst system for purifying exhaust gases of internal engines | Hyun-sik Han, Tae-Woo Lee | 2011-04-26 |
| 7895825 | Method and apparatus for reducing exhaust gas including hydrocarbons during initial cold start period | Hee Chun Kang, Tae-Woo Lee, Hyun-sik Han, Tae Hun Yeon | 2011-03-01 |