Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874473 | Separation of diastereomers by extractive distillation | Dieter Arlt, Ulrich Schwartz, Wolfgang Arlt, Andreas Nickel | 1989-10-17 |
| 4732685 | Method of liquid-liquid extraction using material exchange columns | Friedhelm Steffens, Johannes-Peter Schafer, Jurgen Schroter | 1988-03-22 |
| 4349416 | Process and device for the separation of mixtures which form an azeotrope | Heinrich Steude, Ludwig Bruns, Hans-Dieter Kohler | 1982-09-14 |