Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090311 | Alkali iodide doped zinc sulfide electroluminescent phoshor | Nathaniel E. Brese | 2000-07-18 |
| 5938974 | Yttrium tantalate x-ray phosphors with reduced persistence | Gregory A. Marking | 1999-08-17 |
| 5900188 | Yttrium tantalate x-ray phosphors with reduced persistence | Gregory A. Marking, Kenneth T. Reilly | 1999-05-04 |
| 5783106 | Lithium doped terbium activated gadolinium oxysulfide phosphor | Shellie K. Northrop | 1998-07-21 |
| 5762827 | Yttrium tantalate x-ray phosphors with increased luminance and particle size | — | 1998-06-09 |
| 5716546 | Reduction of lag in yttrium tantalate x-ray phosphors | James R. Cox, Joseph A. Cooper, Cheryl Forster, Barry G. DeBoer, Ronald E. Karam | 1998-02-10 |
| 5711898 | Improved blue-green emitting ZnS:Cu,Cl electroluminescent phosphor and method of making same | Kenneth T. Reilly | 1998-01-27 |
| 5702643 | ZnS:Cu electroluminescent phosphor and method of making same | Kenneth T. Reilly | 1997-12-30 |
| 5582768 | Phosphor and method of making same | Ronald E. Karam, Shellie K. Northrop | 1996-12-10 |
| 5567351 | Phosphor and method of making same | Ru-Yi Qi, Ronald E. Karam, James R. Cox | 1996-10-22 |
| 5531928 | Phosphor and method of making same | Ronald E. Karam, Shellie K. Northrop, Yan Zhang | 1996-07-02 |
| 5489398 | Phosphor and method of making same | Ronald E. Karam, Shellie K. Northrop | 1996-02-06 |
| 5380463 | Method of making niobium-activated yttrium tantalate x-ray phosphor | Ha K. Cheung | 1995-01-10 |
| 5306441 | Method of preparing fluoroplogopite phosphor | Ronald E. Karam, Shellie K. Northrop | 1994-04-26 |
| 5112524 | Unactivated yttrium tantalate phosphor | Ha K. Cheung | 1992-05-12 |
| 4938890 | Method of making YTaO.sub.4 :Nb phosphor with improved brightness using lithium chloride-lithium sulfate eutectic flux | — | 1990-07-03 |
| 4935161 | Process for YTaO.sub.4 :Nb phosphor preparation using reduced amount of flux | Ha K. Cheung | 1990-06-19 |
| 4929384 | Process for improving the luminescence of niobium activated yttrium tantalate X-ray phosphor | — | 1990-05-29 |
| 4929385 | Freon free process for preparing a niobium activated yttrium tantalate X-ray phosphor | — | 1990-05-29 |
| 4929386 | Process for preparing a niobium activated yttrium tantalate X-ray phosphor | — | 1990-05-29 |
| 4925702 | Process for improving the luminescence and bulk density of niobium activated yttrium tantalate X-ray phosphor | — | 1990-05-15 |