| 5827332 |
Azo dyes and a method of making a hydrocarbon using an azo dye |
Gerhard Scholz, Claudia Krah, Karin H. Beck, Udo Mayer |
1998-10-27 |
| 5470959 |
Polyazo dyes having a diazo component of the aminobenzophenone series |
Gunther Lamm, Udo Mayer, Helmut Reichelt |
1995-11-28 |
| 5411556 |
Dyeing leather with a red azo dye |
Johannes P. Dix, Gunther Lamm, Helmut Reichelt |
1995-05-02 |
| 5320647 |
Fluent polyazo dye preparations and method of dying leather or wool therewith |
Georg Henning, Ortwin Schaffer |
1994-06-14 |
| 5266227 |
Oil-soluble phenylazoaniline dyes |
Helmut Reichelt, Christos Vamvakaris |
1993-11-30 |
| 5247071 |
Preparation of acetalized azo dyes |
Guenter Hansen |
1993-09-21 |
| 5205838 |
Liquid dye preparations: bis phenyl-azo-resorcinol in solvent for colored ribbon or ball pen ink |
Rainer Dyllick-Brenzinger, Heinz Hartmann, Helmut Bellaire |
1993-04-27 |
| 5182372 |
Aniline-based oil-soluble azo dyes |
Bernd Derber, Guenter Hansen, Helmut Reichelt, Christos Vamvakaris |
1993-01-26 |
| 5104979 |
Polyazo dyes with diazo components of the aminophenol and the amino diphenyl-sulfide, -sulfoxide or -sulfone series |
Guenter Hansen, Ortwin Schaffer |
1992-04-14 |
| 4638055 |
Iron, copper and chromium complexes of disazo dyes |
Udo Bergmann, Guenter Hansen |
1987-01-20 |
| 4563520 |
Metal complexes of dis- or trisazo compounds containing a middle component twice substituted by hydroxy and/or amino |
Udo Bergmann, Guenter Hansen, Dietrich Lach |
1986-01-07 |
| 4547566 |
Copper, cobalt, nickel and iron complexes of disazo dyes |
Udo Bergmann, Guenter Hansen |
1985-10-15 |
| 4521216 |
Disazo dyes |
Herbert Armbrust, Johannes P. Dix, Guenter Hansen |
1985-06-04 |
| 4491543 |
Dis-, tris-, and tetrakisazo compounds containing resorcinol, sulfonylamino, and two or three sulfonic acid groups |
Udo Bergmann, Guenter Hansen, Dietrich Lach, Michael Thomas |
1985-01-01 |
| 4483795 |
Substituted phenyl disazo dyes containing a 2-amino-substituted thiazole radical |
Heinz Eilingsfeld, Guenter Hansen, Guenther Seybold |
1984-11-20 |
| 4479906 |
Trisazo dye |
Guenter Hansen, Wolfgang Schulte |
1984-10-30 |
| 4473376 |
Dye mixtures of azo compounds soluble in organic solvents |
Guenter Hansen, Franz Merger, Gerhard Nestler |
1984-09-25 |
| 4378969 |
Fluid formulations of oxidation dyes for mineral oil products, fats and waxes |
Guenter Hansen, Hans J. Kolbinger, Rudolf Senninger |
1983-04-05 |
| 4372885 |
Bisazo dyes containing a 2-amino-substituted thiazole radical |
Heinz Eilingsfeld, Guenter Hansen, Guenther Seybold |
1983-02-08 |
| 4327019 |
Acid azo dyes from a 3-amino-benzisothiazole-[2,1]-5-sulfonic acid diazo component |
Heinz Eilingsfeld, Guenter Hansen, Guenther Seybold |
1982-04-27 |
| 4315756 |
Oil-soluble azo dye with N-substituted .beta.-naphthylamine as coupling component |
Johannes Dehnert, Guenter Hansen, Guenther Riedel |
1982-02-16 |
| 4285860 |
Trisazo or tetrakisazo dyes containing a heterocyclic group |
Guenter Hansen, Hans J. Kolbinger, Horst Scheuermann |
1981-08-25 |
| 4250090 |
2-Amino-5-arylazoarylazothiazole compounds |
Heinz Eilingsfeld, Guenter Hansen, Guenther Seybold |
1981-02-10 |
| 4210414 |
Dye mixtures for coloring mineral oil products |
Guenter Hansen, Franz Merger, Gerhard Nestler |
1980-07-01 |