Issued Patents All Time
Showing 1–25 of 151 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7713311 | Liquid direct dye formulations | Ingo Klopp, Helmut Reichelt | 2010-05-11 |
| 6933371 | Bisazo dyestuffs based on hydroxynaphthalene carboxylic acid | Gunter Schroder, Sophia Ebert, Rainer Tresch, Rudiger Sens | 2005-08-23 |
| 6903197 | Azoxy dyes and copper complexes thereof | Rainer Tresch, Rudiger Sens, Claudia Krah | 2005-06-07 |
| 6727351 | Azoxy dyes and their Cu complexes | Rainer Tresch, Rudiger Sens, Claudia Krah | 2004-04-27 |
| 6616712 | Use of compositions containing bisazo compounds for detecting fissures | Karin H. Beck, Christos Vamvakaris, Gerhard Scholz, Claudia Krah | 2003-09-09 |
| 6346609 | Cationic azo-dyes | Torsten Freund, Rainer Tresch | 2002-02-12 |
| 6335462 | Polymerizable oligomesogenes | Karl Siemensmeyer, Peter Schuhmacher | 2002-01-01 |
| 6302924 | Dye mixtures containing thienyl and/or thiazolazo dyes | Rudiger Sens, Claudia Krah, Frank Wuthner | 2001-10-16 |
| 6221114 | Colorant salts and their use in dyeing polymeric material | Frank Würthner, Rudiger Sens, Gunther Seybold | 2001-04-24 |
| 6153734 | Oligomer azo colorants | Gunter Schroder, Torsten Freund, Udo Mayer | 2000-11-28 |
| 6152968 | Water-soluble Quinacridones | Carolin Kranz, Rudiger Sens | 2000-11-28 |
| 6143898 | Pyridone colorants | Rudiger Sens | 2000-11-07 |
| 6136251 | Process for producing pigment particles of defined shape and size | Harald Keller, Reinhold J. Leyrer, Tillmann Faust, Peter Schuhmacher, Karl Siemensmeyer | 2000-10-24 |
| 6136225 | Polymerizable liquid-crystalline compounds | Frank Meyer, Karl Siemensmeyer, Peter Schuhmacher | 2000-10-24 |
| 6114512 | Oligomeric azo dyes | Gunter Schroder, Torsten Freund, Udo Mayer | 2000-09-05 |
| 6099750 | Use of organic compounds in the plastic columnar discotic liquid-crystal phase for transport of electric charges | Jurgen Simmerer, Karl Siemensmeyer, Wolfgang Paulus, Peter Schuhmacher, Birgit Glüsen +4 more | 2000-08-08 |
| 6048968 | Cationic azo dyes based on aminobenzoic acid | Torsten Freund, Rainer Tresch | 2000-04-11 |
| 6036883 | Use of low molecular-weight or polymeric organic compounds which are present in the columnar-helical phase and have liquid-crystalline properties | Wolfgang Paulus, Lukas Haussling, Karl Siemensmeyer, Dieter Adam, Juergen Simmerer +4 more | 2000-03-14 |
| 5962691 | Methine and azamethine dyes based on trifluoromethylpyridones | Andreas Schmidt, Rudiger Sens | 1999-10-05 |
| 5922481 | Electroluminescent arrangement | Frank Meyer, Wolfgang Paulus, Hans-Werner Schmidt | 1999-07-13 |
| 5886242 | Polymerizable, chiral compounds and their use | Paul Delavier, Karl Siemensmeyer, Gerhard Wagenblast, Lothar Laupichler, Volkmar Vill | 1999-03-23 |
| 5853432 | Dye mixtures comprising methine and anthraquinone dyes | Rudiger Sens | 1998-12-29 |
| 5849361 | Methine dyes based on formylaminopyridones | Rudiger Sens, Andreas Schmidt, Friedrich-Wilhelm Raulfs | 1998-12-15 |
| 5833880 | Polymerizable liquid-crystalline compounds | Karl Siemensmeyer, Paul Delavier, Frank Meyer | 1998-11-10 |
| 5811370 | Azamethine dyes | Rudiger Sens, Andreas Schmidt, Stefan Beckmann | 1998-09-22 |