Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5180562 | Apparatus for pulling monocrystals | Dieter Drechsel | 1993-01-19 |
| 4904143 | Apparatus for the continuous feeding of material to be melted | Dieter Drechsel | 1990-02-27 |
| 4367199 | Apparatus having coilable pulling element for drawing a monocrystal from a crucible with adjustable speed | — | 1983-01-04 |
| 4218424 | Apparatus for the zone pulling of monocrystal rods | Joachim Floymayr, Dietrich Drechsel, Friedrich Bubeck | 1980-08-19 |
| 4186173 | Apparatus for producing monocrystals | Joachim Floymayr, Uwe Reimpell, Dieter Drechsel | 1980-01-29 |