Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885415 | Process for the preparation of benzotrifluorides which are substituted by fluorine and optionally in addition by chlorine | Albrecht Marhold | 1989-12-05 |
| 4822912 | Process for the preparation of 2,3,5,6-tetrafluorobenzoic acid | Klaus Naumann, Heinz Ziemann | 1989-04-18 |
| 4820735 | Vinylcyclopropanecarboxylic acid esters | Klaus Naumann, Wolfgang Behrenz, Benedikt Becker, Bernhard Homeyer, Wilhelm Stendel | 1989-04-11 |
| 4812587 | Process for selective hydrogenation of C--C double bonds in the presence of reducible, nitrogen-containing groups and new ruthenium complex compounds | Paul Fiedler, Hartmuth Buding | 1989-03-14 |
| 4795788 | Process for the selective hydrogenation of unsaturated polymers containing nitrile groups | Thomas Himmler, Paul Fiedler, Hartmuth Buding | 1989-01-03 |