Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693102 | Oxonitrides of the formula LnTaON.sub.2 with enhanced brightness and a process for their use | Hans-Peter Letschert, Dietrich Speer | 1997-12-02 |
| 5656328 | Anhydrous gels and xerogels containing no hydroxyl groups, process for the production thereof and use thereof | Eberhard Gunther | 1997-08-12 |