Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |