Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684104 | Water-swellable hydrophilic polymers | Rüdiger Funk, Ulrich Riegel, Michael Wessling | 1997-11-04 |
| 5668236 | Hydrophilic highly swellable hydrogels | Ulrich Riegel, Uwe Stuven, Helmut Klotzsche, Gustav Remmel | 1997-09-16 |
| 5594083 | Water-swellable hydrophilic polymers | R udiger Funk, Ulrich Riegel, Michael Wessling | 1997-01-14 |