Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5315036 | Process for the preparation of 2-aminobenzene-1,4-disulphonic acids and the new compound 6-chloro-2-aminobenzene-1,4-disulphonic acid | Walter Horstmann | 1994-05-24 |
| 4717514 | Process for preparing p-toluidine-2-sulphonic acid | Heinz U. Blank, Herbert Emde | 1988-01-05 |