Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7771530 | Process and apparatus for producing a silicon single crystal | Janis Virbulis, Wilfried von Ammon, Erich Tomzig, Lenoid Gorbunov | 2010-08-10 |
| 7335256 | Silicon single crystal, and process for producing it | Martin Weber, Wilfried von Ammon, Herbert Schmidt, Janis Virbulis, Leonid Gorbunov | 2008-02-26 |
| 6117230 | Process for producing a silicon single crystal, and heater for carrying out the process | Wilfried Ammon, Erich Tomzig, Paul Fuchs | 2000-09-12 |
| 5333672 | Method and device for producing homogeneous alloys | Arie El-Boher, Herman Branover | 1994-08-02 |