Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5789557 | Reactive azo dyes with a coupler of the aminonaphthalene series | Jurgen Dornhagen, Heike Kilburg, Manfred Patsch, Hermann Loffler | 1998-08-04 |
| 5510468 | Amino benzophenone dye | Gunther Lamm, Helmut Reichelt | 1996-04-23 |
| 5380859 | Pyridone compounds and the preparation of disulfonated pyridone compounds | Gunther Lamm, Helmut Beichelt | 1995-01-10 |
| 5372609 | Self-tanning, pretanning and assist tanning of pelts and skin pelts and retanning of leather and skin | Juergen Weiser, Wolfgang Reuther, Hermann Birkhofer, Karl Stork | 1994-12-13 |
| 5342916 | Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases, and formaldehyde, and their use as tanning agents and as spraying aids for redispersible polymer powders | Juergen Weiser, Wolfgang Reuther, Karl Stork, Gernot Franzmann, Thomas Schwerzel +3 more | 1994-08-30 |
| 5320647 | Fluent polyazo dye preparations and method of dying leather or wool therewith | Georg Henning, Georg Zeidler | 1994-06-14 |
| 5286263 | Use of copolymers based on long-chain alkyl vinyl ethers and ethylenically unsaturated dicarboxylic anhydrides for rendering leathers and skins water-repellent | Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger +1 more | 1994-02-15 |
| 5279613 | Copolymers based on long-chain olefins and ethylenically unsaturated dicarboxylic anhydrides for rendering leathers and skins water-repellent | Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger +1 more | 1994-01-18 |
| 5224963 | Quaternized condensation products for aftertreating dyed leather | Johannes P. Dix, Rolf Fikentscher, Rolf Streicher | 1993-07-06 |
| 5155164 | Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde | Hermann Graf, Adolf Stuebinger, Klaus Lorenz, Karl Stork | 1992-10-13 |
| 5124181 | Copolymers based on long-chain unsaturated esters and ethylenically unsaturated carboxylic acids for making leather and furs water repellent | Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger +1 more | 1992-06-23 |
| 5104979 | Polyazo dyes with diazo components of the aminophenol and the amino diphenyl-sulfide, -sulfoxide or -sulfone series | Guenter Hansen, Georg Zeidler | 1992-04-14 |
| 4983185 | Dyeing of leather with pigments | Rolf Streicher, Horst Belde, Paul Guenthert | 1991-01-08 |
| 4936864 | Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistants, their preparation and use in the tanning of leather | Rolf Fikentscher, Dietrich Lach, Rolf Streicher, Alfred Oftring | 1990-06-26 |
| 4888412 | Tanning assistant | Klaus Ebel, Wolfgang Reuther, Rolf Fikentscher, Dietrich Lach, Rolf Streicher | 1989-12-19 |
| 4801693 | Substituted sulfobenzene and triazine-containing reactive dyes | Manfred Patsch | 1989-01-31 |
| 4729768 | Deliming of hides and use of cyclic esters of sulfurous acid as deliming agents | Kurt Schneider, Dietrich Lach, Rolf Streicher | 1988-03-08 |
| 4677199 | Reactive dyes containing substituted 4-fluoropyridaz-6-one radicals | Dietmar Augart, Heinz Eilingsfeld, Heinz-Wolfgang Krueger, Hartmut Lardon, Guenther Seybold | 1987-06-30 |
| 4351640 | Dye powder formulation | Manfred Herrmann | 1982-09-28 |