Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693852 | Process for the preparation of o-acyloxycarboxanilides | Theodor Papenfuhs, Siegfried Planker | 1997-12-02 |
| 5631403 | Process for the preparation of hydroxycarboxanilides | Siegfried Planker, Theodor Papenfuhs | 1997-05-20 |