Issued Patents 1997
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698649 | Copolymers based on vinyl ethers and monoethylenically unsaturated dicarboxylic anhydrides, their preparation and their use | Harald Meyer, Axel Sanner, Hans J. Richter, Hans-Juergen Raubenheimer, Franz Frosch | 1997-12-16 |
| 5662781 | Elimination of nitrile impurities from polymers | Heinrich Hartmann, Michael Kroener, Claudia Nilz | 1997-09-02 |
| 5658993 | Water-soluble or water-dispersible graft copolymers, the preparation thereof and the use thereof | Axel Kistenmacher, Johannes Perner, Angelika Funhoff, Birgit Potthoff-Karl, Hans-Jurgen Raubenheimer | 1997-08-19 |
| 5656646 | Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and/or polyaminocarboxylic acids and their use | Johannes Perner, Paul Diessel, Helmut Guembel, Heinrich Hartmann, Matthias Kroner | 1997-08-12 |
| 5630907 | Use of hydrolyzed copolymers of N-vinylcarboxamides and monoethylenically unsaturated carboxylic acids in papermaking | Claudia Nilz, Heinrich Hartmann, Michael Kroener, Friedrich Linhart, Rudolf Schuhmacher +2 more | 1997-05-20 |
| 5620748 | Use of graft polymers for fatliquoring and filling leather and fur skins | Hermann Birkhofer, Peter Danisch, Heinrich Hartmann, Michael Kneip | 1997-04-15 |
| 5599898 | Insoluble, only slightly swellable polymers containing amino groups, their preparation and their use | Heinrich Hartmann, Michael Kroener, Claudia Nilz | 1997-02-04 |