Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8298666 | Moisture resistant electroluminescent phosphor with high initial brightness and method of making | Chen-Wen Fan, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck | 2012-10-30 |
| 7989064 | Ceramic-coated tungsten powder | Hans-Joachim Lunk, Ricky D. Morgan, Henry J. Stevens, Dale E. Benjamin, Timothy A. Frisk | 2011-08-02 |
| 7833437 | Moisture-resistant electroluminescent phosphor with high initial brightness and method of making | Chen-Wen Fan, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck | 2010-11-16 |
| 6696184 | Supported tungsten carbide material | Joel B. Christian, Robert G. Mendenhall | 2004-02-24 |
| 6551569 | Supported tungsten carbide material | Joel B. Christian, Robert G. Mendenhall | 2003-04-22 |
| 6309700 | Method of making long life electroluminescent phosphor | Chen-Wen Fan, Richard G. W. Gingerich, Dale E. Benjamin | 2001-10-30 |
| 5194332 | Europium-activated barium magnesium silicate phosphor | Anthony F. Kasenga | 1993-03-16 |
| 5185180 | Method of improving the maintenance of a fluorescent lamp containing europium-activated barium magnesium silicate phosphor | Anthony F. Kasenga | 1993-02-09 |