Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4460788 | Process for preparation of anilines which are m-substituted by chlorine | Karlfried Wedemeyer, Ferdinand Hagedorn | 1984-07-17 |
| 4429156 | Process for the preparation of m-halogen-substituted anilines | Karlfried Wedemeyer, Ferdinand Hagedorn | 1984-01-31 |
| 4424360 | Process for the preparation of fused 1,2,3-triazoles | Ferdinand Hagedorn | 1984-01-03 |
| 4316862 | Process for the preparation of sulphonic acid chlorides | Wolfgang Schenk, Heinz U. Blank, Ferdinand Hagedorn | 1982-02-23 |
| 4193937 | Process for preparing 3-chloro- and 3,5-dichloro-anilines | Karlfried Wedemeyer, Wolfgang Kiel | 1980-03-18 |