Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5770677 | Process for the removal of alkali from condensation resins | Ulrich Diester, Christian Rohde | 1998-06-23 |
| 5720865 | Process for the preparation of keto compounds | — | 1998-02-24 |
| 5626733 | Process for the preparation of keto compounds | — | 1997-05-06 |
| 5463121 | Process for the removal of water from acrylic acid | — | 1995-10-31 |
| 4952292 | Process for manufacturing 2,4-hexadiyne-1,6-diol | Helmut Westernacher | 1990-08-28 |
| 4828993 | Process for the preparation of organic acids | — | 1989-05-09 |
| 4659803 | Process for purifying polyphenylene oxides obtained by interruption of the copper-amine catalyzed polycondensation of ortho-disubstituted phenols | Martin Bartmann, Hanns-Jorg Bax, Klaus Burzin, Wilfried Ribbing | 1987-04-21 |
| 4652343 | Process for the separation of mixtures of paraffin or respectively paraffins of 6-14 carbon atoms and alcohol or respectively alcohols of 4-8 | — | 1987-03-24 |
| 4645570 | Distillation of higher alcohols of 6-20 carbon atoms containing water and methanol | Manfred Hartmann | 1987-02-24 |
| 4210426 | Process for recovering propene and propene/propane mixtures from the off-gases from the hydroformylation of propene | — | 1980-07-01 |