Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8727577 | Optical film and lighting device | Young Joo Ahn, Jongchan Park, Young Jin Kim | 2014-05-20 |
| 8517552 | Optical film and light emitting device using the same | Young Joo Ahn, Jongchan Park, Young Jin Kim | 2013-08-27 |