Issued Patents All Time
Showing 25 most recent of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5560961 | Process of making metal-coated melamine/formaldehyde resin fibers | Joerg Adel, Bernd Ziegler, Georg Mermigidis | 1996-10-01 |
| 5470502 | Fluorescent pigments | Werner Ostertag, Guenther Seybold | 1995-11-28 |
| 5424461 | Preparation of 1-amino-4-hydroxyanthraquinone | Manfred Patsch, Heike Kilburg | 1995-06-13 |
| 5421990 | Production of shining shaped articles coated with zinc or a zinc alloy | Bernhard Dung, Bernd Burkhart, Chung-Ji Tschang | 1995-06-06 |
| 5410053 | Rhodamine derivatives | Claudia Kraeh, Udo Mayer, Bernhard Albert, Walter Denzinger | 1995-04-25 |
| 5393828 | Chemical degradation of cured amino resins | Juergen Weiser, Wolfgang Reuther | 1995-02-28 |
| 5382476 | Recycling of cured aminoplast resins | Juergen Weiser, Wolfgang Reuther | 1995-01-17 |
| 5371232 | Preparation of 2-(4-aminophenyl)benzothiazole compounds | Christoph Bomba, Guido Kuth, Paul Guenthert | 1994-12-06 |
| 5356938 | Recycling of cured aminoplast resins | Juergen Weiser, Wolfgang Reuther | 1994-10-18 |
| 5332830 | Preparation of N-hydroxyazoles | Klaus Horchler von Locquenghien, Wolfgang Hoelderich, Ulf Baus, Wolfgang Reuther | 1994-07-26 |
| 5306815 | Azo dyes with a coupling component of the quinoline series | Clemens Grund, Andreas Geisberger, Helmut Reichelt, Andreas Guldner, Mathias Wiesenfeldt +3 more | 1994-04-26 |
| 5298610 | Thiazoleazo dyes having a coupling component of the diphenylamine series | Matthias Wiesenfeldt, Helmut Reichelt, Sabine Gruettner-Merten | 1994-03-29 |
| 5286401 | Use of heterocyclic compounds as bleach activators or optical brighteners in washing and cleaning agents | Bernhard Dung, Wolfgang Trieselt, Johannes Perner, Alfred Oftring | 1994-02-15 |
| 5286854 | Basic azo dyes with a coupling component of the hydroxynaphthalenecarboxylic acid series | Heidi Hengelsberg, Udo Mayer | 1994-02-15 |
| 5270456 | Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series | Guenter Hansen, Karl-Heinz Etzbach, Helmut Reichelt, Ernst Schefczik, Sabine Greuttner +1 more | 1993-12-14 |
| 5256826 | Preparation of aromatic carbonyl or sulfonyl compounds with an aryl ether structure | Heinrich J. Eilingsfeld, Helmut Reichelt, Alexander Aumueller, Bernd Hupfeld | 1993-10-26 |
| 5154763 | Stabilized aqueous alkyldiketene emulsions | Peter Ksoll, Peter Wittmer, Andreas Hohmann, Arnold De Clercq, Ulrich Riebeling | 1992-10-13 |
| 5144064 | Preparation of J-acid urea | Udo Mayer, Friedrich-Wilhelm Raulfs, Ulrike Schloesser | 1992-09-01 |
| 5131981 | Coloring paper | Georg Henning, Manfred Mielke, Hans-Juergen Degen, Sigberg Pfohl | 1992-07-21 |
| 5112362 | Navy dye mixtures of azo disperse dyes for polyester | Guenter Hansen, Gunther Lamm, Helmut Reichelt, Gerhard Wagenblast | 1992-05-12 |
| 5076808 | Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine as light stabilizer | Alexander Aumueller, Wolfgang Reuther, Reinhold Krallmann, Dieter Wegerle | 1991-12-31 |
| 5062861 | Novel navy and black disperse dye mixtures including amino-phenyl thiophene azo disperse dye and red, yellow or orange disperse dyes | Guenter Hansen, Karl-Heinz Etzbach, Helmut Reichelt, Ernst Schefczik, Helmut Degen +2 more | 1991-11-05 |
| 5051504 | Doubled triphenylmethane dyes having bis acylpiperazine linkage | Walter Breitschaft, Udo Mayer, Gunter-Rudolf Schroeder | 1991-09-24 |
| 4970321 | Preparation of cyclic N,N'-dimethylureas | Rainer Betz, Rolf Fikentscher | 1990-11-13 |
| 4945167 | Preparation of N-hydroxypyrazoles | Ulf Baus, Wolfgang Reuther | 1990-07-31 |