Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7335256 | Silicon single crystal, and process for producing it | Martin Weber, Wilfried von Ammon, Herbert Schmidt, Janis Virbulis, Yuri Gelfgat | 2008-02-26 |
| 6001170 | Process and apparatus for the growth of single crystals | Erich Tomzig, Werner Zulehner, Wilfried von Ammon, Yu M Gelfgat | 1999-12-14 |