Issued Patents 1989
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886859 | Slightly crosslinked, water-soluble polymaleic acid, its preparation and its use | Walter Denzinger, Ulrich Gockel, Felix Richter, Hans-Jurgen Raubenheimer, Ekhard Winkler | 1989-12-12 |
| 4880497 | Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper | Sigberg Pfohl, Michael Kroener, Walter Denzinger | 1989-11-14 |
| 4879361 | Preparation of bead polymers from water-soluble, ethylenically unsaturated monomers | Gerd Rehmer, Manfred Niessner, Wilfried Heide, Karl-Clemens Peters | 1989-11-07 |
| 4873299 | Batchwise preparation of crosslinked, finely divided polymers | Bernhard H. Nowakowsky, Juergen Beck, Christos Vamvakaris | 1989-10-10 |
| 4849126 | Use of graft polymers based on polyesters, polyester urethanes and polyester amides as grayness inhibitors in detergents | Alexander Kud, Wolfgang Trieselt | 1989-07-18 |
| 4846995 | Use of graft polymers based on polyalkylene oxides as grayness inhibitors in the wash and aftertreatment of textile material containing syntheic fibers | Alexander Kud, Wolfgang Trieselt | 1989-07-11 |
| 4846994 | Use of graft polymers based on polyalkylene oxides as grayness inhibitors in the wash and aftertreatment of textile material containing synthetic fibers | Alexander Kud, Wolfgang Trieselt | 1989-07-11 |
| 4818795 | Polymaleic acid, its preparation and its use | Walter Denzinger, Ulrich Goeckel, Felix Richter, Ekhard Winkler, Hans-Juergen Raubenheimer | 1989-04-04 |
| 4818794 | Slightly crosslinked, water-soluble polymaleic acid, its preparation and its use | Walter Denzinger, Ulrich Goeckel, Felix Richter, Hans-Juergen Raubenheimer, Ekhard Winkler | 1989-04-04 |
| 4814102 | Detergents containing oxyalkylated, carboxyl-containing polymers | Richard Baur, Walter Denzinger, Albrecht Eckell, Josef Mueller, Hans-Juergen Raubenheimer +1 more | 1989-03-21 |
| 4814505 | Purification of n-vinylformamide | Michael Kroener, Willi Schmidt, Alfred Oftring, Theo Proll | 1989-03-21 |