Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4390636 | Glass frit of diopside crystal precursors | — | 1983-06-28 |
| 4352890 | Diopside crystal precursor glass frit flux in production of sanitary ware and feldspathic bodies | — | 1982-10-05 |
| 4337316 | Sanitary ware and process of production | — | 1982-06-29 |
| 4240837 | Cadmium glass having low cadmium oxide solubility | Thomas W. Wonnacott | 1980-12-23 |