Issued Patents All Time
Showing 76–77 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5968856 | Sinterable lithium disilicate glass ceramic | Martin Frank, Volker Rheinberger, Wolfram Hoeland | 1999-10-19 |
| 5698019 | Leucite-containing phosphosilicate glass-ceramic | Martin Frank, Volker Rheinberger, Wolfram Hoeland | 1997-12-16 |