Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7754009 | Unpolished semiconductor wafer and method for producing an unpolished semiconductor wafer | Rudolf Lehner, Helmut Schwenk | 2010-07-13 |
| 5462011 | Method for pulling single crystals | Erich Tomzig, Reinhard Wolf | 1995-10-31 |
| 4851628 | Method for the crucible-free floating zone pulling of semiconductor rods and an induction heating coil therefor | Wilfried Ammon, Heinz Klinger | 1989-07-25 |
| 4722764 | Method for the manufacture of dislocation-free monocrystalline silicon rods | Heinz Herzer, Gunter Matuszak | 1988-02-02 |
| 4290647 | Hinge mount assembly for reclinable seat | Hans-Joachim Berghof, Heinz Werner | 1981-09-22 |