Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6359131 | Process for preparing dioxazine compounds | Wolfgang Bauer, Peter Kempter | 2002-03-19 |
| 5932727 | Process for the preparation of dioxazine compounds | Wolfgang Bauer, Manfred Urban, Dieter Schnaitmann | 1999-08-03 |
| 5902884 | Process for preparing N-alkylcarbazoles | Wolfgang Bauer, Klaus Delpy, Leonhard Unverdorben | 1999-05-11 |
| 5383961 | Water-soluble sulphur dyes, their preparation and use | Wolfgang Bauer, Willi Steckelberg, Josef Ritter, Wilhelm Mauelshagen | 1995-01-24 |
| 5378571 | Aryl and aralkyl sulfide, sulfoxide or sulfone compounds as charge regulators | Hans-Tobias Macholdt | 1995-01-03 |
| 5274184 | Aryl sulphide, aryl sulphoxide and aryl sulphone compounds | Hans-Tobias Macholdt | 1993-12-28 |
| 5240466 | Dyeing leather with water-insoluble sulphur dyes | Wolfgang Bauer, Hubert Kruse, Jan Mast, Lothar Schlosser | 1993-08-31 |
| 4810254 | Wet-fastness properties of sulphur dyestuffs dyeings on cellulose treated with poly-di-allyl-ammonium salt | Wolfgang Bauer, Karl-Heinz Keil, Manfred Kaiser, Joachim Steinbach, Klaus Sternberger | 1989-03-07 |
| 4486350 | Process for the preparation of sulphur dyestuffs of the phthalocyanine series | Wolfgang Bauer, Klaus Kuhlein | 1984-12-04 |
| 4302582 | Process for the preparation of a condensation product from phenothiazine and p-nitrosophenol | Joachim Ribka, Ulrich Gotsmann, Heinz Dickmanns | 1981-11-24 |
| 4218219 | Condensation product from phenothiazine and p-nitrosophenol, process for the production of the condensation product, process for the production of sulfur dyestuffs using the condensation product and the sulfur dyestuffs prepared therewith | Joachim Ribka, Heinz Dickmanns, Ulrich Gotsmann | 1980-08-19 |