Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6010569 | Device for handling heavy components of a crystal puller according to the Czochralski method which is supported in a supporting frame | Winfried Schulmann, Udo Wenske, Helmut Kaiser | 2000-01-04 |
| 5902397 | Crystal holder | Winfried Schulman, Helmut Kaiser | 1999-05-11 |
| 5846322 | Apparatus for drawing single crystals | Winfried Schulmann, Helmut Kaiser | 1998-12-08 |
| 5766348 | Rotating head for crystal pulling systems for carrying out the czochralski process | Winfried Schulmann, Helmut Kaiser | 1998-06-16 |
| 5762703 | Method and apparatus for pulling monocrystals from a melt contained in a crucible | Winfried Schulmann, Helmut Kaiser | 1998-06-09 |
| 5702523 | Rotating head for crystal pulling systems | Winfried Schulmann, Helmut Kaiser | 1997-12-30 |
| 5631511 | Gear motor with an electric motor having a hollow shaft | Winfried Schulmann, Helmut Kaiser | 1997-05-20 |