Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5492869 | Colored, opaque glass-ceramic | George Halsey Beall, Robert W. Pfitzenmaier | 1996-02-20 |
| 5256179 | Method of making a glass-ceramic article having an adherent colored glaze with controlled texture | David H. Crooker | 1993-10-26 |
| 5219799 | Lithium disilicate-containing glass-ceramics some of which are self-glazing | George Halsey Beall, Joseph W. Morrissey, Joseph E. Pierson | 1993-06-15 |
| 5176961 | Colored, textured glass-ceramic articles | David H. Crooker | 1993-01-05 |
| 5108665 | Enstatite body and method | David H. Crooker | 1992-04-28 |
| 4940477 | Method for synthesizing topaz | Peter L. Bocko, David H. Crooker | 1990-07-10 |