Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684104 | Water-swellable hydrophilic polymers | Rüdiger Funk, Fritz Engelhardt, Ulrich Riegel | 1997-11-04 |
| 5594083 | Water-swellable hydrophilic polymers | R udiger Funk, Fritz Engelhardt, Ulrich Riegel | 1997-01-14 |