Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331698 | Method for making a very pure silicon | Wilhelm Lux | 1982-05-25 |
| 4215154 | Process for producing semiconductor materials and metals of highest purity | Josef Waldinger | 1980-07-29 |