Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4960328 | Apparatus for the extrusion, expansion and/or thermal treatment of substances and substance mixtures | by Walter H. Schumacher, executor | 1990-10-02 |
| 4794011 | Process for the treatment of vegetable raw materials | — | 1988-12-27 |
| 4622760 | Apparatus for desolventizing and drying solvent-containing residue meal | — | 1986-11-18 |
| 4619053 | Process and apparatus for desolventizing flaky or granular vegetable residue material obtained in the extraction with organic solvents | — | 1986-10-28 |
| 4617177 | System for continuous solid/liquid extraction | — | 1986-10-14 |
| 4592847 | Process and apparatus for cleaning filter elements, especially filter cartridges | — | 1986-06-03 |
| 4528185 | Copper complexes, their preparation, their use in controlling plant pests, and agents for such control | Helmut Kraft, Ernst-Heinrich Pommer, Dietrich Schlotterbeck, Gregor Ley | 1985-07-09 |
| 4503627 | Apparatus for the treatment of flaky or granulated material with gases or vapors in a continuous countercurrent process | — | 1985-03-12 |
| 4453832 | Apparatus for trouble-free and continuous charging of extractors with extraction feedstock to be treated and with extractant or solvent | Heinz Thiem | 1984-06-12 |
| 4409358 | Copper complexes | Helmut Kraft, Ernst-Heinrich Pommer, Dietrich Schlotterbeck, Gregor Ley | 1983-10-11 |
| 4390506 | Apparatus for trouble-free and continuous charging of extractors with extraction feedstock to be treated and with extractant or solvent | — | 1983-06-28 |
| 4234860 | Piezoelectric filter and process for the manufacture thereof | Hermann Zacharias | 1980-11-18 |