Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7537657 | Silicon wafer and process for producing it | Robert Hoelzl, Reinhold Wahlich, Wilfried von Ammon | 2009-05-26 |
| 7235863 | Silicon wafer and process for producing it | Robert A. Holzl, Reinhold Wahlich, Wilfried von Ammon | 2007-06-26 |
| 6803331 | Process for the heat treatment of a silicon wafer, and silicon wafer produced | Robert A. Holzl, Reinhold Wahlich, Wilfried von Ammon | 2004-10-12 |