Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679144 | Powder composition for the preparation of an opaque dental porcelain in the form of a paste | Kerstin Herbst | 1997-10-21 |
| 5591030 | Dental ceramic restoration using a multi-layered structure | Susanne Weber | 1997-01-07 |