Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7368179 | Methods and devices using high efficiency alkaline earth metal thiogallate-based phosphors | Yongchi Tian, Perry Niel Yocom | 2008-05-06 |
| 7125501 | High efficiency alkaline earth metal thiogallate-based phosphors | Yongchi Tian, Perry Niel Yocom | 2006-10-24 |
| 7018565 | Efficient, size-selected green-emitting phosphors | Yongchi Tian, Perry Niel Yocom | 2006-03-28 |
| 6783700 | Red photoluminescent phosphors | Yongchi Tian, Ian Gregory Hill | 2004-08-31 |
| 6544438 | Preparation of high emission efficiency alkaline earth metal thiogallate phosphors | Perry Niel Yocom | 2003-04-08 |
| 6419854 | Long persistence red phosphors and method of making | Perry Niel Yocom | 2002-07-16 |
| 6379584 | Long persistence alkaline earth sulfide phosphors | Perry Niel Yocom | 2002-04-30 |
| 6071432 | Long persistence red phosphors | Perry Yocom | 2000-06-06 |