Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938442 | Method for elongating a cylinder of silica glass | Clemens Schmitt, Karsten Bräuer, Rainer Köppler, Heinz Fabian | 2005-09-06 |
| 6923025 | Device for sintering a shaped body | — | 2005-08-02 |
| 6402605 | Drilling device for brittle materials | Henning Bierstedt | 2002-06-11 |
| 5738702 | Apparatus for holding a hollow cylinder of silicon dioxide soot | Klaus Ruppert, Michael Hünermann, Klaus Dittmer, Anton Steinkohl | 1998-04-14 |
| 5667547 | Method for manufacture of quartz glass plates | Anton Steinkohl | 1997-09-16 |
| 5665139 | Mold for production of a quartz glass component | Klaus Ruppert, Klaus Dittmer | 1997-09-09 |
| 5665132 | Process for the sintering of hollow cylinders of silicon dioxide soot | Klaus Ruppert, Michael Hünermann, Klaus Dittmer, Anton Steinkohl | 1997-09-09 |
| 5643069 | Drill for drilling brittle materials | Dagobert Knieling, Andreas Schultheis | 1997-07-01 |
| 4964227 | Apparatus for drying finely divided solids | — | 1990-10-23 |
| 4676814 | Method for the continuous building of a hollow cylindrical soot body having no internal support | Dieter Ross, Hans-Ulrich Bonewitz, Karl-Friedrich Klein, Albert Muhlich, Karlheinz Rau +4 more | 1987-06-30 |
| 4466700 | Lightweight mirror especially for astronomical purposes | Karlheinz Rau, Fritz Simmat | 1984-08-21 |
| 4447130 | Light-weight mirror blank for astronomical purposes and method of making a supporting framework for such blanks | Karlheinz Rau, Anton Steinkohl, Bruno Streb | 1984-05-08 |
| 4331383 | Light-weight mirror | — | 1982-05-25 |