Issued Patents All Time
Showing 25 most recent of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9624401 | Process for producing aqueous polyurethane formulations | Stefan Adams, Karl Haeberle, Reinhard Treiber | 2017-04-18 |
| 7753964 | Method for producing a leather semi-finished product | Stephan Hueffer, Stefan Schroeder, Juergen Carle, Thorsten Raedler, Tilman Taeger | 2010-07-13 |
| 7410504 | Adducts based on cyclic compounds and the use thereof as tanning agents and curing agents | Stephan Hueffer, Oliver Reese, Walter Gramlich, Stefan Schroeder, Guenter Scherr | 2008-08-12 |
| 6669740 | Dye preparations comprising azo dyes | Karl Siemensmeyer, Bernd Siegel, Manfred Herrmann, Günther König, Rudiger Sens | 2003-12-30 |
| 6537331 | Dye preparations containing azo dyes | Karl Siemensmeyer, Bernd Siegel, Manfred Herrmann, Günther König, Rudiger Sens | 2003-03-25 |
| 5719288 | Pyridone dyes | Ruediger Sens, Karl-Heinz Etzbach | 1998-02-17 |
| 5620756 | Production of a ferroelectric or antiferroelectric or ferrielectric order in liquid crystals which solidify in a glass-like manner | Karl-Heinz Etzbach, Karl Siemensmeyer, Gerhard Wagenblast | 1997-04-15 |
| 5608041 | Azo dyestuffs containing a diazo component from the aniline series and coupling component from the triazolopyridine series | Ernst Schefczik, Helmut Reichelt, Clemens Grund | 1997-03-04 |
| 5538824 | Reversible or irreversible production of an image | Karl-Heinz Etzbach, Harald Fuchs, Karl Siemensmeyer, Gerhard Wagenblast | 1996-07-23 |
| 5484460 | Dye mixtures containing azo dyes having a coupling component from the diaminopyridine series | Hermann Loeffler, Gunther Lamm, Arno Lange, Helmut Reichelt, Herbert Rothmaier | 1996-01-16 |
| 5455325 | Optically active phenoxypropionic esters | Wolfgang Brox, Karl-Heinz Etzbach, Axel Paul, Karl Siemensmeyer | 1995-10-03 |
| 5417882 | Liquid-crystalline compounds | Karl-Heinz Etzbach, Karl Siemensmeyer, Gerhard Wagenblast | 1995-05-23 |
| 5418555 | Reversible or irreversible production of an image | Karl-Heinz Etzbach, Harald Fuchs, Karl Siemensmeyer, Gehard Wagenblast | 1995-05-23 |
| 5403363 | Dye mixtures containing azo dyes having a coupling component from the diaminopyridine series | Hermann Loeffler, Gunther Lamm, Arno Lange, Helmut Reichelt, Herbert Rothmaier | 1995-04-04 |
| RE34877 | Azo dyes for thermotransfer printing | Karl-Heinz Etzbach, Sabine Gruettner, Gunther Lamm, Helmut Reichelt, Ruediger Sens | 1995-03-14 |
| 5393308 | Mixtures of azo dyes for navy to black shades | Arno Lange, Clemens Grund, Helmut Reichelt, Paul Anthony Richter | 1995-02-28 |
| 5384402 | Bichromophoric cyano-containing methine dyes and transfer thereof | Karl-Heinz Etzbach, Ruediger Sens | 1995-01-24 |
| 5376150 | Use of pyridine dyes in the textile sector, dye mixtures with pyridine dyes, and triazolopyridine dyes having a thienyl radical | Arno Lange, Ruediger Sens, Karl-Heinz Etzbach, Helmut Reichelt, Sabine Gruettner-Merten | 1994-12-27 |
| 5371266 | Bichromophoric cyano-containing methine dyes and transfer thereof | Karl-Heinz Etzbach, Ruediger Sens | 1994-12-06 |
| 5350873 | Optically active phenoxypropionic esters | Wolfgang Brox, Karl-Heinz Etzbach, Axel Paul, Karl Siemensmeyer | 1994-09-27 |
| 5338445 | Module for a reactor for anaerobic waste water treatment | Michael Zumbragel | 1994-08-16 |
| 5332520 | Liquid-crystalline polymers of virtually uniform molecular weight | Karl-Heinz Etzbach, Karl Siemensmeyer | 1994-07-26 |
| 5312703 | Reversible or irreversible production of an image | Gerhard Wagenblast | 1994-05-17 |
| 5312926 | Indonaphthol dyes and thermal transfer thereof | Karl-Heinz Etzbach, Ruediger Sens | 1994-05-17 |
| 5310942 | Pyridone dyes and thermal transfer thereof | Ruediger Sens, Karl-Heinz Etzbach | 1994-05-10 |