Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889548 | Use of an oxide ceramic material for compression molds for shaping elements made from glass or a glass-containing ceramic and having high surface quality and dimensional accuracy | Jochen Kriegesmann, Waldemar Bluethgen | 1989-12-26 |
| 4881897 | Tooth-root implant with long-term resistance to repetitive stresses | Klaus Deutscher, Heinz Broemer, Volker Strunz, Wolfgang Rosenkranz | 1989-11-21 |
| 4859635 | Optical fluorophosphate glass having anomalous positive partial dispersion and process for its production | Norbert Meinert, Werner Huber, Rainer Dreuth | 1989-08-22 |
| 4830655 | High temperature-resistant material for devices used for forming glass optical elements with high surface quality | Heinz Broemer, Klaus Deutscher | 1989-05-16 |