Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4502951 | Suction device for obtaining dust samples | Rainer Koenig, Rolf A. Sieglen, Wolfgang Weisser | 1985-03-05 |
| 4482864 | Process and equipment for collecting magnetite-containing ore dust samples and determining the magnetite and phosphorous contents thereof | Rainer Koenig, Rolf A. Sieglen, Wolfgang Weisser | 1984-11-13 |
| 4441616 | Process for sorting coarse to fine materials according to their chemical composition | Rainer Konig, Hans Freund, Rolf A. Sieglen | 1984-04-10 |