Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4276209 | Co-condensates based on phenol-butyraldehyde resins, their preparation and their use | Harro Petersen, Hans-Joachim Krause, Kurt F. Fischer, Adolph Segnitz | 1981-06-30 |