Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8691009 | Crystal pulling apparatus and method for the production of heavy crystals | Stefan Henkel, Axel Vonhoff, Erich Tomzig, Dieter Knerer | 2014-04-08 |
| 7828897 | Crystal pulling apparatus and method for the production of heavy crystals | Stefan Henkel, Axel Vonhoff, Erich Tomzig, Dieter Knerer | 2010-11-09 |
| 7261773 | Melting crucible | Andreas Muhe, Axel Vonhoff | 2007-08-28 |
| 7179331 | Crystal growing equipment | Andreas Muhe, Axel Vonhoff | 2007-02-20 |
| 6341173 | Device and method for the determination of diameters of crystals | Joachim Aufreiter, Dieter Bruss, Klaus Kalkowski | 2002-01-22 |
| 6277192 | Crystal pulling unit | Joachim Aufreiter | 2001-08-21 |
| 6231669 | Crystal pulling unit | Joachim Aufreiter | 2001-05-15 |
| 6203610 | Device and a process for monitoring a melt for the production of crystals | Joachim Aufreiter, Dieter Bruss, Klaus Kalkowski | 2001-03-20 |
| 6126745 | Device for controlling crystal growth processes | Joachim Aufreiter, Dieter Bruss, Klaus Kalkowski | 2000-10-03 |
| 5853479 | Apparatus for drawing single crystals by the czochralski method | Joachim Aufreiter, Dieter Bruss | 1998-12-29 |
| 5587016 | Controlled feeding Czochralski apparatus | Joachim Aufreiter, Dieter Bruss, Klaus Kalkowski | 1996-12-24 |
| 5485802 | Method and apparatus for pulling monocrystals from a melt | Roland Gesche, Martin Flachsel, Joachim Aufreiter | 1996-01-23 |
| 5360480 | Apparatus for continuously feeding material to a melting crucible | — | 1994-11-01 |