Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6153008 | Device and method for pulling a single crystal | Wilfried von Ammon, Hans Olkrug, Erich Dornberger | 2000-11-28 |
| 5487354 | Method for pulling a silicon single crystal | Wilfried von Ammon, Erich Dornberger, Hans Oelkrug, Peter Gerlach | 1996-01-30 |
| 5477808 | Process for reducing the oxygen incorporation into a single crystal of silicon | Hans Oelkrug | 1995-12-26 |