Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8012792 | Composite phosphor powder, light emitting device using the same and method for manufacturing composite phoshpor powder | Chulsoo Yoon, Joon Ho Yoon, Chang Hoon Kwak | 2011-09-06 |
| 7911127 | Phosphor blend for wavelength conversion and white light emitting device using the same | Jong Rak Sohn, Il Woo Park, Chang Hoon Kwak, Chul Soo Yoon, Joon Ho Yoon | 2011-03-22 |
| 7832312 | Composite phosphor powder, light emitting device using the same and method for manufacturing composite phosphor powder | Chulsoo Yoon, Joon Ho Yoon, Chang Hoon Kwak | 2010-11-16 |