Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681878 | Low-dusting pulverulent hydrophilic polymers | Helmut Klotzsche, Ulrich Riegel, Uwe Stuven | 1997-10-28 |
| 5668236 | Hydrophilic highly swellable hydrogels | Fritz Engelhardt, Ulrich Riegel, Uwe Stuven, Helmut Klotzsche | 1997-09-16 |