Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9481578 | Polycrystalline silicon rod and process for production thereof | Martin Weber, Michael Kerscher, Heinz Kraus, Reiner Pech | 2016-11-01 |
| 9446957 | Polycrystalline silicon rod and method for producing polysilicon | Mikhail Sofin, Reiner Pech | 2016-09-20 |
| 8999516 | Polycrystalline silicon rod and process for production thereof | Martin Weber, Michael Kerscher, Heinz Kraus, Reiner Pech | 2015-04-07 |
| 8747794 | Polycrystalline silicon and method for production thereof | Reiner Pech | 2014-06-10 |
| 6267815 | Method for pulling a single crystal | Andreas Ehlert, Wilfried Ammon | 2001-07-31 |
| 6153008 | Device and method for pulling a single crystal | Wilfried von Ammon, Hans Olkrug, Franz Segieth | 2000-11-28 |
| 6015460 | Method and apparatus for pulling a monocrystal | Wilfried von Ammon | 2000-01-18 |
| 5951753 | Method and device for producing monocrystals | Hans Olkrug, Wilfried von Ammon, Dieter Graf | 1999-09-14 |
| 5868831 | Process for controlling the growth of a crystal | Wilfried von Ammon, Hans Olkrug, Franz Wasmeier, Francois Dupret, Vincent Wertz +1 more | 1999-02-09 |
| 5759261 | Method for pulling a monocrystal | Wilfried von Ammon | 1998-06-02 |
| 5567399 | Apparatus for producing a single crystal | Wilfried von Ammon, Herber Weidner, Alfred Pardubitzki | 1996-10-22 |
| 5487354 | Method for pulling a silicon single crystal | Wilfried von Ammon, Hans Oelkrug, Peter Gerlach, Franz Segieth | 1996-01-30 |