Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4182918 | Process for the preparation of polyhydric phenols | Hermann Seifert, Wulf Schwerdtel, Wolfgang Swodenk | 1980-01-08 |
| 4182917 | Process for the preparation of polyhydric phenols | Hermann Seifert, Wulf Schwerdtel, Wolfgang Swodenk | 1980-01-08 |