Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657015 | Method for the secondary cross-linking of hydrogels with 2-oxotetrahydro-1,3-oxazines | Ulrich Riegel, Matthias Weismantel, Volker Frenz, Fritz Engelhardt | 2003-12-02 |
| 6559239 | Method for the secondary cross-linking of hydrogels with N-acyl-2-oxazolidinones | Ulrich Riegel, Matthias Weismantel, Volker Frenz, Fritz Engelhardt | 2003-05-06 |
| 6503979 | Method for cross-linking hydrogels with bis- and poly-2-oxazolidinones | Rüdiger Funk, Volker Frenz, Ulrich Riegel, Matthias Weismantel, Fritz Engelhardt | 2003-01-07 |