Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675040 | Process for the preparation of sulphones | Wolfgang Harms, Udo-Winfried Hendricks, Karl-Josef Herd | 1997-10-07 |
| 5663442 | Process for the preparation of sulphones | Wolfgang Harms, Udo-Winfried Hendricks, Karl-Josef Herd | 1997-09-02 |