Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6267911 | Phosphors with long-persistent green phosphorescence | William M. Yen, Weiyi Jia, Lizhu Lu | 2001-07-31 |
| 6117362 | Long-persistence blue phosphors | William M. Yen, Weiyi Jia, Lizhu Lu | 2000-09-12 |