Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6258921 | Easily dyeable polyester film and preparation thereof | Sang-Bong Park, Jong Chan Park | 2001-07-10 |
| 6036905 | Method for preparing polyester films | Sang-Bong Park, Gi Tak Gam | 2000-03-14 |