Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6011229 | Electrostatic separator for classifying triboelectrically charged substance mixtures | Hans Knauer, Ingo Stahl | 2000-01-04 |
| 5370235 | Method of separating polyethylene (PE) and polypropylene (PP) | Ingo Stahl, Axel Hollstein, Ulrich Kleine-Kleffmann, Ulrich Neitzel | 1994-12-06 |
| 5366091 | Method of separating poly(ethylene terephthalate) (PET) and poly(vinyl chloride) (PVC) | Ingo Stahl, Axel Hollstein, Ulrich Kleine-Kleffmann, Ulrich Neitzel | 1994-11-22 |
| 5358119 | Method of separating a mixture of plastics comprising at least three components using electrostatic techniques | Ingo Stahl, Axel Hollstein, Ulrich Kleine-Kleffmann, Ulrich Neitzel | 1994-10-25 |
| 4569432 | Arrangement for feeding of a fine-particle material to electrostatic free-fall cutter | Helmut Zentgraf, Gunter Fricke, Heinrich Balzer, Hans Burghardt, Fritz Maikranz | 1986-02-11 |
| 4557827 | Electrostatic free-fall separator with feeding arrangement | Gunter Fricke, Helmut Zentgraf | 1985-12-10 |
| 4276154 | Process for the electrostatic separation of crude potash salts | Arno Singewald, Gunter Fricke, Ulrich Neitzel | 1981-06-30 |