Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9142737 | Light emitting device surrounded by reflection wall and covered with fluorescent film | Il Woo Park, Chang Hoon Kwak | 2015-09-22 |
| 8890188 | Light emitting device surrounded by reflection wall and covered with fluorescent film | Il Woo Park, Chang Hoon Kwak | 2014-11-18 |
| 8507299 | Light emitting diode package and manufacturing method thereof | Seong Ah Joo, Chang Hoon Kwak, Il Woo Park | 2013-08-13 |
| 8445927 | Light emitting diode package and manufacturing method thereof | Seong Ah Joo, Chang Hoon Kwak, Il Woo Park | 2013-05-21 |