Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11498841 | Method for producing highly dispersed silicon dioxide | — | 2022-11-15 |
| 9534290 | Apparatus for deposition of polycrystalline silicon comprising uniformly spaced filament rods and gas inlet orifices, and process for deposition of polycrystalline silicon using same | — | 2017-01-03 |
| 9446957 | Polycrystalline silicon rod and method for producing polysilicon | Erich Dornberger, Reiner Pech | 2016-09-20 |
| 9382617 | Rod-type polysilicon having improved breaking properties | — | 2016-07-05 |
| 9238866 | Rod-type polysilicon having improved breaking properties | — | 2016-01-19 |
| 8366892 | Graphite electrode | Heinz Kraus | 2013-02-05 |
| 7939173 | Polycrystalline silicon rod for zone reflecting and a process for the production thereof | Hans-Christof Freiheit, Heinz Kraus | 2011-05-10 |