Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5292957 | Process for the preparation of N-alkylhalogenoanilines | Theodor Papenfuhs | 1994-03-08 |
| 4992589 | Substituted phenyl hydroxyethyl sulfones, and process for their preparation | Hermann Fuchs, Theodor Papenfuhs, Folker Kohlhaas | 1991-02-12 |
| 4948919 | Arylaminonitrophenyl hydroxyethyl sulfones | Theodor Papenfuhs | 1990-08-14 |
| 4851575 | Process for the preparation of 2-nitro-4-sulfamyldiphenylamine dyestuffs | Theodor Papenfuhs | 1989-07-25 |