Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7999456 | White light emitting diode with yellow, green and red light emitting phosphor | Chul Soo Yoon, Chang Hoon Kwak, Il Woo Park | 2011-08-16 |
| 7911127 | Phosphor blend for wavelength conversion and white light emitting device using the same | Il Woo Park, Yun Seup Chung, Chang Hoon Kwak, Chul Soo Yoon, Joon Ho Yoon | 2011-03-22 |