Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828718 | Phosphors having improved luminance and long lifespan | Young-Chul You, Kyu-Chan Park, Sang-Hyuk Lee | 2004-12-07 |
| 6818154 | Low-voltage excited red phosphor and method of preparing the same | Young-Chul You, Kyu-Chan Park | 2004-11-16 |
| 6752933 | Phosphors having longer lifespan | Sang-Hyuk Lee, Young-Chul You, Kyu-Chan Park | 2004-06-22 |
| 6669868 | Phosphors having improved luminance and longer lifespan | Sang-Hyuk Lee, Young-Chul You, Kyu-Chan Park | 2003-12-30 |
| 6416688 | High luminance blue color fluorescent substance for low-voltage and manufacturing method of the same | Yong-Chan You, Mi-Ran Song | 2002-07-09 |
| 6322725 | Low-voltage excited blue phosphor and method of preparing the same | Yong-Chan You, Mi-Ran Song | 2001-11-27 |
| 6217795 | Low voltage blue emitting phosphor and method of preparing same | Yong-Chan You, Mi-Ran Song | 2001-04-17 |
| 5932140 | Phosphor having improved luminescense efficiency and a process for preparing the same | — | 1999-08-03 |