Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |