Issued Patents 2004
Showing 1–3 of 3 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 |