Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5736476 | Borosilicate glass of high chemical resistance and low viscosity which contains zirconium oxide and lithium oxide | Eckhart Watzke, Peter Brix, Franz Ott | 1998-04-07 |
| 5627115 | Colored borosilicate glass | Eckhart Watzke, Thomas Kloss, Gerhard Kemmler | 1997-05-06 |
| 5599753 | Borosilicate glass weak in boric acid | Eckhart Watzke, Thomas Kloss, Gerhard Kemmler | 1997-02-04 |