Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874473 | Separation of diastereomers by extractive distillation | Ulrich Schwartz, Hans-Walter Brandt, Wolfgang Arlt, Andreas Nickel | 1989-10-17 |
| 4871484 | Process for the preparation of 2,2-bis-chloro-methylalkanecarboxylic acid chlorides | Helmut Fiege, Manfred Jautelat | 1989-10-03 |
| 4855438 | Process for the preparation of optically active 2-hydroxyethylazole derivatives | Johannes Kaulen, Graham Holmwood, Wolfgang Kramer | 1989-08-08 |
| 4835239 | Diisocyanates and their use for the preparation of polyurethanes | Gerhard Klein | 1989-05-30 |
| 4826865 | Novel azolyl-aroxymethyl-dimethylpentinol fungicides | Gerhard Jager, Manfred Jautelat, Paul Reinecke, Wilhelm Brandes, Gerd Hanssler | 1989-05-02 |
| 4824975 | Process for the preparation of oxetane-3-carboxylic acids | Helmut Fiege, Manfred Jautelat | 1989-04-25 |