Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855394 | Reaction products and condensates based on substituted propyleneureas and their preparation | Ulrich Goeckel, Harro Petersen, Rolf Osterloh, Eberhard Schupp, Thomas Schwerzel | 1989-08-08 |