Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5601925 | Penetration agent | Manfred Wenzler | 1997-02-11 |
| 4919913 | Process for the production of solar silicon | Martin Abels, Ingo Schwirtlich, Peter Woditsch | 1990-04-24 |
| 4900532 | Continuous process for refining silicon | Ingo Schwirtlich, Klaus Gebauer | 1990-02-13 |