Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658993 | Water-soluble or water-dispersible graft copolymers, the preparation thereof and the use thereof | Walter Denzinger, Axel Kistenmacher, Johannes Perner, Birgit Potthoff-Karl, Hans-Jurgen Raubenheimer | 1997-08-19 |
| 5652330 | Preparation of polycondensates of citric acid and use thereof in detergents and cleaners | Dieter Boeckh, Alexander Kud, Richard Baur, Volker Schwendemann, Gunnar Schornick | 1997-07-29 |