Issued Patents All Time
Showing 76–100 of 121 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5403363 | Dye mixtures containing azo dyes having a coupling component from the diaminopyridine series | Hermann Loeffler, Gunther Lamm, Volker Bach, Arno Lange, Herbert Rothmaier | 1995-04-04 |
| RE34877 | Azo dyes for thermotransfer printing | Volker Bach, Karl-Heinz Etzbach, Sabine Gruettner, Gunther Lamm, Ruediger Sens | 1995-03-14 |
| 5393308 | Mixtures of azo dyes for navy to black shades | Arno Lange, Volker Bach, Clemens Grund, Paul Anthony Richter | 1995-02-28 |
| 5389110 | Azo dyes and process of dyeing with azo dyes which contain an N-(hydroxysulfonylphenylalkyl)pyridone coupling component | Johannes P. Dix, Bernd Hupfeld, Gunther Lamm | 1995-02-14 |
| 5382263 | Blue dye mixtures of high brilliance | Helmut Degen, Arno Lange, Sabine Gruettner-Merten | 1995-01-17 |
| 5376150 | Use of pyridine dyes in the textile sector, dye mixtures with pyridine dyes, and triazolopyridine dyes having a thienyl radical | Arno Lange, Volker Bach, Ruediger Sens, Karl-Heinz Etzbach, Sabine Gruettner-Merten | 1994-12-27 |
| 5364972 | Preparation of nitrobenzophenones, and a color-stable modification of a benzophenone-azopyridone dye | Helmut Degen, Norbert Zimmerman, Ralf Brueckmann, Gunther Lamm, Arno Lange | 1994-11-15 |
| 5352774 | Dyes containing thiophene radicals | Guenter Hansen, Ernst Schefczik, Karl-Heinz Etzbach, Hermann Loeffler | 1994-10-04 |
| 5347032 | Preparation of alkyl cyanoacetates | Clemens Grund | 1994-09-13 |
| 5342928 | Benzisothiazole- and benzothiophene-azo dyes with a coupling component of the aniline series | Thomas Roetsch, Helmut Hagen, Clemens Grund | 1994-08-30 |
| 5330543 | Thiopheneazo dyes with a coupling component of the diaminopyridine series | Guenter Hansen, Gunther Lamm, Hermann Loeffler, Helmut Degen, Arno Lange +1 more | 1994-07-19 |
| 5306815 | Azo dyes with a coupling component of the quinoline series | Erwin Hahn, Clemens Grund, Andreas Geisberger, Andreas Guldner, Mathias Wiesenfeldt +3 more | 1994-04-26 |
| 5298592 | Preparation of polyaryl ethers with nitrogen compound catalysts | Alexander Aumueller, Wolfgang Eberle, Gerhard Heinz, Bernd Hupfeld, Christiane Husemann +1 more | 1994-03-29 |
| 5298610 | Thiazoleazo dyes having a coupling component of the diphenylamine series | Erwin Hahn, Matthias Wiesenfeldt, Sabine Gruettner-Merten | 1994-03-29 |
| 5283326 | Dyes containing thiophene radicals | Guenter Hansen, Ernst Schefczik, Karl-Heinz Etzbach, Hermann Loeffler | 1994-02-01 |
| 5270456 | Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series | Erwin Hahn, Guenter Hansen, Karl-Heinz Etzbach, Ernst Schefczik, Sabine Greuttner +1 more | 1993-12-14 |
| 5266227 | Oil-soluble phenylazoaniline dyes | Christos Vamvakaris, Georg Zeidler | 1993-11-30 |
| 5264560 | Preparation of quaternized azo dyes | Guenter Hansen, Johannes P. Dix, Clemens Grund | 1993-11-23 |
| 5260446 | Aminothiazoles | Matthias Wiesenfeldt, Karl-Heinz Etzbach, Sabine Gruettner | 1993-11-09 |
| 5256826 | Preparation of aromatic carbonyl or sulfonyl compounds with an aryl ether structure | Erwin Hahn, Heinrich J. Eilingsfeld, Alexander Aumueller, Bernd Hupfeld | 1993-10-26 |
| 5245081 | Preparation of N,N-disubstituted m-aminophenols | Manfred Hauptreif | 1993-09-14 |
| 5216139 | Thiopheneazo dye based on a coupling component of the thiazole series | Karl-Heinz Etzbach, Guenter Hansen, Gunther Lamm | 1993-06-01 |
| 5200386 | Azo dyes for thermotransfer printing | Ruediger Sens, Sabine Gruettner, Karl-Heinz Etzbach, Gunther Lamm | 1993-04-06 |
| 5182372 | Aniline-based oil-soluble azo dyes | Bernd Derber, Guenter Hansen, Christos Vamvakaris, Georg Zeidler | 1993-01-26 |
| 5175265 | Azo dyes with a diazo component of the 4-amino-7-nitrobenzisothiazole series and a coupling compound from the aminopyrazole or hydroxypyridone series | Guenter Hansen, Helmut Hagen | 1992-12-29 |