Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8206027 | Use of an apparatus for adding at least one additive to a reactor interior | Annemarie Hillebrecht, Leo Van Miert, Dominicus van Esbroeck, Bernd Brian, Siegfried Chszaniecki | 2012-06-26 |
| 7915363 | Acidic superabsorbent hydrogels | Rüdiger Funk, Norbert Herfert, Mariola Wanior, Martin H. Beck | 2011-03-29 |
| 7790823 | Acidic superabsorbent hydrogels | Rüdiger Funk, Norbert Herfert, Mariola Wanior, Martin H. Beck | 2010-09-07 |
| 7393908 | Cross-linked, water-swellable polymer and method for producing the same | Wilfried Heide, Stefan Wickel, Thomas Daniel | 2008-07-01 |
| 6641064 | Complete drying method for hydrogels | Joachim Dentler, Norbert Herfert, Helmut Klotzsche, Rudolf Schliwa | 2003-11-04 |
| 6565768 | Method for producing water-swellable hydorphilic polymers, said polymers and use thereof | Joachim Dentler, Norbert Herfert, Rudolf Schliwa, Fritz Engelhardt | 2003-05-20 |
| 6300423 | Process for modifying hydrophilic polymers | Friedrich Engelhardt, Manfred Mayer | 2001-10-09 |
| 5945495 | Use of surfactants in the drying of hydrophilic highly swellable hydrogels | Thomas Daniel, Norbert Herfert, Gustav Remmel, Ulrich Riegel, Fritz Engelhardt | 1999-08-31 |
| 5840321 | Hydrophilic, highly swellable hydrogels | Fritz Engelhardt, Thomas Daniel, Norbert Herfert | 1998-11-24 |
| 5731365 | Hydrophilic, highly swellable hydrogels | Fritz Engelhardt, Norbert Herfert, Ulrich Riegel, Rüdiger Funk, Detlev Seip | 1998-03-24 |
| 5681878 | Low-dusting pulverulent hydrophilic polymers | Helmut Klotzsche, Gustav Remmel, Ulrich Riegel | 1997-10-28 |
| 5668236 | Hydrophilic highly swellable hydrogels | Fritz Engelhardt, Ulrich Riegel, Helmut Klotzsche, Gustav Remmel | 1997-09-16 |
| 5489647 | Hydrophilic, swellable graft polymers | Ulrich Kussmaul, Manfred Mayer, Ulrich Riegel, Friedrich Engelhardt | 1996-02-06 |
| 4779675 | Pair of substances for absorption heat transformers | Adolf Schmidt | 1988-10-25 |