Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5385871 | Fluorine-containing lead- and cadmium-free glazes | Paul L. Rose | 1995-01-31 |
| 5204291 | Transparent lead-free glazes | — | 1993-04-20 |
| 5194303 | Additives for lead- and cadmium-free glazes | Kathleen Ann Wexell, Dale R. Wexell | 1993-03-16 |
| 5070043 | Colored glass-ceramics | W. Duane Amundson, Jr. | 1991-12-03 |
| 4748137 | Low temperature melting frits | — | 1988-05-31 |
| 4590171 | Low temperature lead and cadmium-free frits | — | 1986-05-20 |
| 4311504 | Method of coating glass or ceramics with a colored frit | — | 1982-01-19 |
| 4285731 | Lead-free and cadmium-free frits | — | 1981-08-25 |
| 4282035 | Lead-free and cadmium-free frits | — | 1981-08-04 |