Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5627115 | Colored borosilicate glass | Eckhart Watzke, Andrea Kampfer, Gerhard Kemmler | 1997-05-06 |
| 5612262 | Colored borosilicate glass | Eckhart Watzke | 1997-03-18 |
| 5610108 | Reducing melt borosilicate glass having improved UV transmission properties and water resistance and methods of use | Eckhart Watzke, Peter Brix, Franz Ott | 1997-03-11 |
| 5599753 | Borosilicate glass weak in boric acid | Eckhart Watzke, Andrea Kampfer, Gerhard Kemmler | 1997-02-04 |