Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6755049 | Method of producing a quartz glass crucible | Gabriele Korus, Hilmar Laudahn, Martin Arndt | 2004-06-29 |
| 6684664 | Process for manufacture of a component made of opaque synthetic quartz glass | Waltraud Werdecker, Johann Leist, Helmut Leber | 2004-02-03 |
| 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, Johann Leist, Rainer Koeppler | 2003-12-09 |
| 6548131 | Quartz glass crucible and process for the manufacture of the crucible | Heinz Fabian, Martin Arndt, Johann Leist, Wolfgang Englisch | 2003-04-15 |
| 6380110 | Process for making opaque quartz, for carrying out the process suitable SiO2 granulate, and component of opaque quartz glass | Waltraud Werdecker, Heinz Fabian, Johann Leist, Rolf Göbel | 2002-04-30 |