Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5492079 | Process for producing rods or blocks of semiconductor material and an apparatus for carrying out the process | Ulrich Angres | 1996-02-20 |
| 4759887 | Apparatus and process for the manufacture of shaped bodies from silicon granulates | Deiter Helmreich, Roland Luptovits, Maximilian Semmler, Burkhard Walter | 1988-07-26 |
| 4447289 | Process for the manufacture of coarsely crystalline to monocrystalline sheets of semiconductor material | Dieter Helmreich | 1984-05-08 |