Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881897 | Tooth-root implant with long-term resistance to repetitive stresses | Henning Franek, Klaus Deutscher, Volker Strunz, Wolfgang Rosenkranz | 1989-11-21 |
| 4857487 | Optical fluorophosphate glasses possessing positive anomalous partial dispersion and improved physico-chemical properties, and a process for their preparation | Werner Huber, Norbert Meinert | 1989-08-15 |
| 4830655 | High temperature-resistant material for devices used for forming glass optical elements with high surface quality | Henning Franek, Klaus Deutscher | 1989-05-16 |