Issued Patents All Time
Showing 51–75 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5206426 | Phenylene diamines and process for the preparation of phenylene diamines | Klaus Pandl | 1993-04-27 |
| 5200511 | Cholorotriazine dyes with two azo chromophores exhibiting further reactive groups | Hermann Loeffler | 1993-04-06 |
| 5196573 | Process for the preparation of sulfonated anthranilic acids | Klaus Pandl, Jacques Dupuis, Helmut Hagen | 1993-03-23 |
| 5194607 | Reactive dyes with a triphendioxazine chromophore | Claus Marschner, Claus-Ulrich Priester | 1993-03-16 |
| 5182371 | Doubled phenyl- or naphthyl-azobenzenes having a plurality of reactive groups and intermediates thereof | Bernd Siegel | 1993-01-26 |
| 5175259 | Mono- and bis-azo compounds containing 6-hydroxy-3-heterocyclic onium-pyridone-2-groupings coupled to diazo components containing diazine or triazine rings | Joerg L. Jessen, Manfred Ruske, Knut Kessel | 1992-12-29 |
| 5175262 | Doubled reactive dyes | Hermann Loeffler, Klaus Pandl | 1992-12-29 |
| 5149789 | Reactive dyes with two or three nitrogen-containing haloheterocycles as reactive system | Joerg L. Jessen, Klaus Pandl, Hermann Loeffler, Bernd Siegel | 1992-09-22 |
| 5117050 | Phenylene diamines and process for the preparation of phenylene diamines | Klaus Pandl | 1992-05-26 |
| 5091516 | Phenyl- or naphthylazobenzenes with multiple reactive groups and intermediates therefor | Bernd Siegel | 1992-02-25 |
| 5076831 | 1,8-napthalenedicarboximides as antidotes | Thomas Saupe, Norbert Meyer, Peter Plath, Ulrich Schirmer, Bruno Wuerzer +2 more | 1991-12-31 |
| 5047529 | Phenylsulfones and cyclization products thereof | Klaus Pandl, Martin Fischer | 1991-09-10 |
| 5041540 | Copper formazan reactive dyes having halotriazine ring | Klaus Pandl | 1991-08-20 |
| 5041631 | Process for the preparation of 2-alkylamino-4-aminobenzenesulfonic acids | Klaus Pandl | 1991-08-20 |
| 5004807 | Copper formazan reactive dyes containing a monofluorotriazine or monochlorotriazine group | Klaus Pandl | 1991-04-02 |
| 5003049 | Dyes containing fluorotriazine and dichloropyridazone groups | Udo Bergmann, Alfred Hackenberger | 1991-03-26 |
| 4988802 | Reactive dyes with three reactive groups | Hermann Loeffler | 1991-01-29 |
| 4973671 | Doubled copper formazan reactive dyes containing a monofluorotriazine or monochlorotriazine group | Klaus Pandl | 1990-11-27 |
| 4942232 | Imidazolylmethylene-containing triphendioxazine dyes | Manfred Ruske | 1990-07-17 |
| 4927935 | 3-cyanoquinoline derivatives | Alfred Hackenberger | 1990-05-22 |
| 4925954 | Vat dye based on flouranthene | Gerhard Epple, Helmut Flohr, Helmut Degen, Uwe Nahr | 1990-05-15 |
| 4846892 | Tetrachloroperylene-3,4,9,10-tetracarboxylic acid diimide pigment and its use | Georg Henning, Erwin Hahn, Peter Hauser | 1989-07-11 |
| 4801693 | Substituted sulfobenzene and triazine-containing reactive dyes | Ortwin Schaffer | 1989-01-31 |
| 4798887 | Azo dyes of methylaniline disulfonic acid coupled with naphthylamine sulfonic acid | Heinz-Wolfgang Krueger, Hartmut Lardon | 1989-01-17 |
| 4517270 | Electrophotographic recording medium | Fritz Graser, Gerhard Hoffmann, Reinhold J. Leyrer, Peter Neumann | 1985-05-14 |