Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336312 | Bismuth-containing colorants | Christine J. Byrne, John J. Welch | 1994-08-09 |
| 5334412 | Enamel for use on glass and a method of using the same | George C. Korn | 1994-08-02 |
| 5316570 | Stable heavy metal free zircon pigments for use in plastics and paints and method for coloring thereof | — | 1994-05-31 |