Issued Patents All Time
Showing 26–50 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5488100 | Formazan-based reactive dyes with at least two reactive groups, and aminophenols | Claus Marschner | 1996-01-30 |
| 5449762 | Phenylazo- or naphthylazobenzenes having thioether groups | Matthias Wiesenfeldt, Bernd Siegel | 1995-09-12 |
| 5446193 | Formazan-based reactive dyes with at least two reactive groups, and aminophenols | Claus Marschner | 1995-08-29 |
| 5444163 | Preparation of reactive phthalocyanine dyes | Juergen Dornhagen | 1995-08-22 |
| 5428140 | Preparation of phenylazo- or naphthylazobenzenes having thioether groups | Matthias Wiesenfeldt, Bernd Siegel | 1995-06-27 |
| 5424461 | Preparation of 1-amino-4-hydroxyanthraquinone | Erwin Hahn, Heike Kilburg | 1995-06-13 |
| 5410027 | Method of preparing fiber-reactive formazan dyes involving hydrolysis of a formyl amino moiety | Claus Marschner | 1995-04-25 |
| 5405993 | Reactive formazan dyes and hydrazones | Claus Marschner | 1995-04-11 |
| 5401846 | Preparation of 5-halo-2-(1-anthraquinonylamino)-benzoic acids and 4'-halo-2,1(N)-anthraquinonyl-1',2'(N)-benzacridones | Michael Schmitt, Matthias Niedenbrueck | 1995-03-28 |
| 5391719 | Preparation of aminoformazans | Matthias Wiesenfeldt, Klaus Pandl | 1995-02-21 |
| 5387674 | Reactive formazan dyes and hydrazones | Claus Marschner | 1995-02-07 |
| 5380941 | Preparation of aromatic ureas which contain a thioether or sulfonyl group | Bernd Siegel | 1995-01-10 |
| 5354882 | Doubled phenyl- or naphthyl-azobenzenes having a plurality of reactive groups and intermediates therefor | Bernd Siegel | 1994-10-11 |
| 5336800 | Mixed oxamides | Bernd Siegel, Knut Kessel | 1994-08-09 |
| 5334734 | Vat dyes | Matthias Niedenbrueck | 1994-08-02 |
| 5276148 | Phenylazobenzenes or naphthylazobenzenes having a plurality of fiber-reactive groups | Bernd Siegel | 1994-01-04 |
| 5260431 | Nitroanilinesulfonic acids and the preparation of phenylenediaminesulfonic acids | Klaus Pandl | 1993-11-09 |
| 5245020 | Reactive dyes with two or three nitrogen-containing haloheterocycles as reactive system | Joerg L. Jessen, Klaus Pandl, Hermann Loeffler, Bernd Siegel | 1993-09-14 |
| 5241055 | Reactive dyes with a reactive system based on alkenylsulfonyl and benzyl compounds as intermediates therefor | Claus Marschner, Joerg L. Jessen, Klaus Pandl | 1993-08-31 |
| 5231171 | Reactive dyes having an allylsulfonyl or propargylesulfonyl group | Claus Marschner, Matthias Niedenbrueck, Bernd Siegel, Klaus Pandl | 1993-07-27 |
| 5225595 | Arylsulfonyl compounds with unsaturated radicals | Bernd Siegel, Claus Marschner | 1993-07-06 |
| 5223607 | Reactive azo dyes with at lest two reactive halotriazine groups | Hermann Loeffler, Reinhold Krallmann | 1993-06-29 |
| 5216137 | Doubled phenyl azo naphthalene reactive dyes having four halotriazine reactive groups and a phenylene diamine series bridge member | Hermann Loeffler, Reinhold Krallmann | 1993-06-01 |
| 5214207 | Phenyl- or naphthylazobenzenes with multiple reactive groups and intermediates therefor | Bernd Siegel | 1993-05-25 |
| 5210187 | Double attachment reactive dyes having alkyl- or alkenylsulfonyl and alkyl- or alkenylsulfonylalkyl groups | Uwe Nahr, Friedrich Wirsing, Joerg L. Jessen, Klaus Pandl, Claus Marschner +1 more | 1993-05-11 |