Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8557143 | Electroluminescent ZnS:Mn phosphor and method of making | Xianzhong Chen, Chen-Wen Fan | 2013-10-15 |
| 7535176 | VUV-excited device with blue-emitting phosphor | Gregory A. Marking, Chung-Nin Chau, Thomas M. Snyder, Chen-Wen Fan | 2009-05-19 |
| 7288216 | Method of making electroluminescent phosphors with small particle sizes and powder with D50 value of no more than 10 micrometers | Xianzhong Chen | 2007-10-30 |
| 6555021 | Preparation of ZnS:Cu,Cl electroluminescent phosphor | Butchi Reddy Vaddi | 2003-04-29 |
| 6387299 | Process for producing electroluminescent phosphor with increased efficiency | Butchi Reddy Vaddi | 2002-05-14 |
| 5783106 | Lithium doped terbium activated gadolinium oxysulfide phosphor | Vaddi B. Reddy | 1998-07-21 |
| 5582768 | Phosphor and method of making same | Vaddi B. Reddy, Ronald E. Karam | 1996-12-10 |
| 5531928 | Phosphor and method of making same | Ronald E. Karam, Vaddi B. Reddy, Yan Zhang | 1996-07-02 |
| 5489398 | Phosphor and method of making same | Vaddi B. Reddy, Ronald E. Karam | 1996-02-06 |
| 5306441 | Method of preparing fluoroplogopite phosphor | Vaddi B. Reddy, Ronald E. Karam | 1994-04-26 |
| 5102633 | Method for reducing impurities in hexammine cobalt halide compounds | Eric F. Husted, Michael J. Miller, David Townsend Smith | 1992-04-07 |