Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9421584 | Method for purifying polycrystalline silicon | Hanns Wochner, Christian Gossmann | 2016-08-23 |
| 7736439 | Method for cleaning a polysilicon fraction | Hanns Wochner, Christian Gossmann | 2010-06-15 |
| 4184117 | Communication security method and system | — | 1980-01-15 |