Issued Patents All Time
Showing 51–75 of 121 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5834602 | Acid disazo dyes | Gunther Lamm | 1998-11-10 |
| 5763612 | Benzopyran dyes and their intermediates | Clemens Grund, Gerhard Wagenblast | 1998-06-09 |
| 5756807 | Preparation of alkyl cyanoacetates | Clemens Grund, Martin Holderbaum, Stefan Beckmann | 1998-05-26 |
| 5739343 | Nitro dyes | Gunther Lamm, Clemens Grund | 1998-04-14 |
| 5703238 | Preparation of pyridine dyes | Ernst Schefczik, Sabine Gruttner-Merten, Peter Saling, Rudiger Sens | 1997-12-30 |
| 5700757 | Triazolopyridine dyes and intermediates therefor | Rudiger Sens, Peter Saling | 1997-12-23 |
| 5695686 | Brightener mixtures based on bisstyryl compounds | Manfred Hauptreif, Norbert Leppert, Karl-Heinz Etzbach, Peter Raatz, Manfred Herrmann | 1997-12-09 |
| 5623060 | Dye mixture containing at least four diazo dyes having the same color with a diaminopyridine coupling component | Gunther Lamm, Hermann Loeffler | 1997-04-22 |
| 5621107 | Sulfopyridones and a process of making therefor | Gunther Lamm, Matthias Wiesenfeldt | 1997-04-15 |
| 5616710 | Triazolopyridine dyes | Rudiger Sens, Ernst Schefczik, Karl-Heinz Etzbach | 1997-04-01 |
| 5612465 | Phenylazotriazolopyridine dyestuffs | Ernst Schefczik, Ruediger Sens, Karl-Heinz Etzbach, Clemens Grund | 1997-03-18 |
| 5608041 | Azo dyestuffs containing a diazo component from the aniline series and coupling component from the triazolopyridine series | Ernst Schefczik, Volker Bach, Clemens Grund | 1997-03-04 |
| 5573585 | Molecular sieves containing azo dyes | Guenter Lauth, Wolfgang Hoelderich, Gerhard Wagenblast, Bernhard Albert, Gunther Lamm +2 more | 1996-11-12 |
| 5554782 | Preparation of dicyanobenzenes by ammonoxidation | Clemens Grund, Guenther Glas, Paul Guenthert, Rainer Becker, Arno Lange +1 more | 1996-09-10 |
| 5554737 | Doubled acid azo dyes with a hydroxypyridone coupling component | Gunther Lamm, Matthias Wiesenfeldt | 1996-09-10 |
| 5547477 | Dye mixtures with pyridoneazo dyes | Arno Lange, Helmut Degen, Gunther Lamm, Dieter Wegerle | 1996-08-20 |
| 5536840 | Process of preparing diaminopyridine compounds | Gunther Lamm, Hermann Loeffler | 1996-07-16 |
| 5510468 | Amino benzophenone dye | Gunther Lamm, Ortwin Schaffer | 1996-04-23 |
| 5502170 | Azo dyes with an acetalized diazo component of the thiophene or thiazole series | Sabine Gruettner-Merten, Arno Lange, Helmut Degen | 1996-03-26 |
| 5486609 | Preparation of carbocylic M-aminohydroxyaromatics | Robert M. Reinhardt, Roland Merger | 1996-01-23 |
| 5484460 | Dye mixtures containing azo dyes having a coupling component from the diaminopyridine series | Hermann Loeffler, Gunther Lamm, Volker Bach, Arno Lange, Herbert Rothmaier | 1996-01-16 |
| 5470959 | Polyazo dyes having a diazo component of the aminobenzophenone series | Gunther Lamm, Udo Mayer, Georg Zeidler | 1995-11-28 |
| 5466790 | Azo dyes with an acetalized diazo component of the thiophene or thiazole series | Sabine Gruettner-Merten, Arno Lange, Helmut Degen | 1995-11-14 |
| 5443281 | Variously positionable pivot joint connection for wheel guide arms in motor vehicles | Walter Burkard, Ewald Ulrich | 1995-08-22 |
| 5411556 | Dyeing leather with a red azo dye | Johannes P. Dix, Gunther Lamm, Georg Zeidler | 1995-05-02 |