Issued Patents All Time
Showing 1–25 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8962715 | Stabilized aqueous polymer compositions and their use | Werner Spielmann, Christian Bremer, Anja Obermüller, Joachim Christian | 2015-02-24 |
| 8552071 | Hydrogels absorbing aqueous fluids | Thomas Daniel, Ulrich Riegel, Matthias Weismantel, Norbert Herfert | 2013-10-08 |
| 7842741 | Stabilized aqueous polymer compositions | Christian Bremer, Anja Obermüller, Joachim Christian | 2010-11-30 |
| 7662460 | Plasticized superabsorbent polymer sheets and use thereof in hygienic articles | Norbert Herfert, Michael A. Mitchell | 2010-02-16 |
| 7132479 | Polymer mixtures with improved odor control | Rüdiger Funk, Mariola Wanior | 2006-11-07 |
| 6602950 | Hydrophilic hydrogels with a high swelling capacity and method for producing and using them | Joachim Dentler, Rüdiger Funk, Norbert Herfert, Mariola Wanior | 2003-08-05 |
| 6414214 | Mechanically stable hydrogel-forming polymers | Volker Frenz, Norbert Herfert, Ulrich Riegel, Matthias Weismantel, Wilfried Heide | 2002-07-02 |
| 6300423 | Process for modifying hydrophilic polymers | Uwe Stuven, Manfred Mayer | 2001-10-09 |
| 5489647 | Hydrophilic, swellable graft polymers | Ulrich Kussmaul, Manfred Mayer, Uwe Stuven, Ulrich Riegel | 1996-02-06 |
| 5331059 | Hydrophilic, highly swellable hydrogels | Rüdiger Funk, Ulrich Riegel, Gerlinde Ebert, Hanss-Jerg Kleiner | 1994-07-19 |
| 5236965 | Hydrophilic, swellable polymers | Gerlinde Ebert | 1993-08-17 |
| 5214075 | Hydrophilic, swellable polymers | Gerlinde Ebert | 1993-05-25 |
| 5182312 | Hydrophilic, swellable polymers | Gerlinde Ebert | 1993-01-26 |
| 5082059 | Use of hydrocarbon-rich gels as fracturing fluids | Gerlinde Ebert | 1992-01-21 |
| 5068298 | Alkenyl-phosphonic and -phosphinic esters, process for their preparation, their use and hydrogels prepared using them | Ulrich Riegel, Joachim Gersdorf, Hans-Jerg Kleiner | 1991-11-26 |
| 5066745 | Alkenylphosphonic and --phosphinic acid esters, process for their preparation, hydrogels produced using them, and their use | Ulrich Riegel, Joachim Gersdorf, Hans-Jerg Kleiner | 1991-11-19 |
| 5041496 | Hydrophilic, swellable graft copolymers, their preparation and use | Ulrich Riegel, Jurgen Kuhlwein | 1991-08-20 |
| 5011892 | Hydrophilic swellable graft copolymers, their preparation and use | Ulrich Riegel | 1991-04-30 |
| 4959441 | Alkenylphosphonic and -phosphinic acid esters, process for their preparation, hydrogels produced using them, and their use | Ulrich Riegel, Joachim Gersdorf, Hans-Jerg Kleiner | 1990-09-25 |
| 4931497 | Hydrophilic swellable graft polymers from maleic anhydride-alkylene substrate | Ullrich Riegel | 1990-06-05 |
| 4794166 | Process for the preparation of a hydrogel which is largely free from monomers | Manfred Schrod, Manfred Ziegelmayer, Josef Hilbig, Reinhard Donges | 1988-12-27 |
| 4749758 | Process for the preparation of copolymers of vinylphosphonic acid and (meth) acrylic acid in aqueous solution | Walter Dursch, Jurgen Grosse, Werner Gohla, Ulrich Riegel | 1988-06-07 |
| 4743666 | Water-soluble copolymers with pendant phosphonic, sulphonic and amide groups | Klaus Kuhlein, Juliane Balzer, Walter Dursch, Hans-Jerg Kleiner | 1988-05-10 |
| 4736014 | Water-soluble polycoesters, process for their preparation, and their use | Karl Hintermeier, Rolf Kleber, Peter Klein | 1988-04-05 |
| 4722958 | Process for the preparation of copolymers | Josef Sauer, Kerstine Rabas, Ulrich Karsunky, Wolfram Schidlo, Jochen M. Quack +2 more | 1988-02-02 |