Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7226508 | Quartz glass crucible and method for the production thereof | Martin Arndt, Hilmar Laudahn, Manfred Schwarzbauer | 2007-06-05 |
| 6755049 | Method of producing a quartz glass crucible | Hilmar Laudahn, Martin Arndt, Udo Gertig | 2004-06-29 |