Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8408027 | Method for the production of a composite body from a basic body of opaque quartz glass and a tight sealing layer | Waltraud Werdecker | 2013-04-02 |
| 7350378 | Method for producing rotationally symmetrical quartz glass crucibles | Rolf Göbel, Helmut Fritz | 2008-04-01 |
| 6684664 | Process for manufacture of a component made of opaque synthetic quartz glass | Waltraud Werdecker, Udo Gertig, Helmut Leber | 2004-02-03 |
| 6672107 | Quartz glass crucible and process for the production thereof | Waltraud Werdecker | 2004-01-06 |
| 6660671 | Method of producing a composite material having a high SiO2 content, composite material obtained according to the method, and permanent mold made thereof | Waltraud Werdecker, Udo Gertig, Rainer Koeppler | 2003-12-09 |
| 6548131 | Quartz glass crucible and process for the manufacture of the crucible | Heinz Fabian, Martin Arndt, Udo Gertig, Wolfgang Englisch | 2003-04-15 |
| 6381987 | Process for making opaque quartz glass and opaque component made according to the process | Waltraud Werdecker, Heinz Fabian, Rolf Göbel, Bruno Uebbing, Erich Rosin | 2002-05-07 |
| 6380110 | Process for making opaque quartz, for carrying out the process suitable SiO2 granulate, and component of opaque quartz glass | Waltraud Werdecker, Heinz Fabian, Udo Gertig, Rolf Göbel | 2002-04-30 |
| 6306489 | Quartz glass component for a reactor housing a method of manufacturing same and use thereof | Dietmar Hellmann | 2001-10-23 |