Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8298338 | Chemical vapor deposition apparatus | Changsung Sean Kim, Sang Duk Yoo, Jong Pa Hong, Ji Hye Shim | 2012-10-30 |
| 8124960 | Nitride semiconductor light emitting diode | Sang Duk Yoo, Ho-Il Jung, Chul Kyu Lee, Sung-Hwan JANG | 2012-02-28 |