Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5049175 | Method of manufacturing a glass body having a non-uniform refractive index | Dieter Ross, Hans-Ulrich Bonewitz | 1991-09-17 |
| 4676814 | Method for the continuous building of a hollow cylindrical soot body having no internal support | Dieter Ross, Hans-Ulrich Bonewitz, Uwe Christiansen, Karl-Friedrich Klein, Albert Muhlich +4 more | 1987-06-30 |
| 4475204 | Method and apparatus for the production of flat, transparent vitreous silica slabs of low bubble content | Lutz Brandt, Karl Kreutzer, Horst Schmidt, Fritz Simmat | 1984-10-02 |
| 4466700 | Lightweight mirror especially for astronomical purposes | Uwe Christiansen, Fritz Simmat | 1984-08-21 |
| 4447130 | Light-weight mirror blank for astronomical purposes and method of making a supporting framework for such blanks | Uwe Christiansen, Anton Steinkohl, Bruno Streb | 1984-05-08 |
| 4392715 | Optical fiber | Hans-Ulrich Bonewitz, Albert Muhlich | 1983-07-12 |
| 4377405 | Method for the production of flat, transparent vitreous silica slabs of low bubble content | Lutz Brandt, Karl Kreutzer, Horst Schmidt, Fritz Simmat | 1983-03-22 |
| 4368846 | Melting burner made of vitreous silica for the production of massive vitreous silica | Horst Lorenz, Oswald Huth, Lothar Volkmann, Kurt Stenzel | 1983-01-18 |
| RE30883 | Method of producing synthetic quartz glass | Fritz Simmat, Albert Muhlich, Norbert Treber | 1982-03-16 |
| 4235615 | Method for the production of semiproduct for the production of light conducting fibers | Albert Muhlich, Fritz Simmat, Norbert Treber | 1980-11-25 |