Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5208376 | Process for the continuous preparation of 3,3'-dichloro-benzidine dihydrochloride | Kurt Habig, Klaus Warning | 1993-05-04 |
| 4454355 | Process for the preparation of p-nitrophenetole | Hans H. Schubert | 1984-06-12 |
| 4433168 | Process for the purification of crude 3,4,3',4'-tetraaminodiphenyl | Hans H. Schubert | 1984-02-21 |
| 4355189 | Process for the preparation of 4-phenoxyphenols | Gert Volkwein, Hubert Schonowsky | 1982-10-19 |
| 4338473 | Method for removing nitrosation agent(s) from a nitrated aromatic compound | Kurt Habig, Lothar Schulz, Heinz Schutte | 1982-07-06 |
| 4310711 | Process for preparing 5-chloro-2-nitrophenol | Helmut Muller | 1982-01-12 |
| 4306103 | Process for the manufacture of 1,3,5-trichlorobenzene | Gert Volkwein, Hans Wolfram | 1981-12-15 |
| 4217307 | Process for the preparation of 2,2'-dichloro-hydrazobenzene | Siegfried Planker, Otto Fuchs | 1980-08-12 |