Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4572729 | Method for producing articles of high-purity synthetic quartz glass | Rudolf Griesshammer, Michael Schwab, Werner Zulehner | 1986-02-25 |
| 4534791 | Process for treating silicon and ferrosilicon with slag | Anton More, Rudolf Riedle, Herbert Straussberger, Willi Streckel | 1985-08-13 |
| 4515762 | Process for processing waste gases resulting during the production of silicon | Rudolf Griesshammer, Franz Koppl, Ernst Muhlhofer, Michael Schwab | 1985-05-07 |