Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4754071 | Process for preparing aryl hydroxyethyl sulfones | Theodor Papenfuhs, Walter Kuhn | 1988-06-28 |
| 4612396 | Process for the preparation of pure 2-ethylamino-4-nitro-1-alkoxybenzenes | Theodor Papenfuhs | 1986-09-16 |