Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8039533 | Synthetic styrene resin composition for environment-friendly window frame | Jang Hyun Choi, Seung-Kyu Lee, Yun Hwan Kim | 2011-10-18 |
| 7838579 | Synthetic styrene resin composition for environment-friendly window frame | Jang Hyun Choi, Seung-Kyu Lee, Yun Hwan Kim | 2010-11-23 |