Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6080209 | Stable colorant compositions | Johannes P. Dix, Rudolf Paulus, Manfred Herrmann | 2000-06-27 |
| 6013775 | Polyazo dyes containing a plurality of hydroxy sulfonyl groups | Gunther Lamm | 2000-01-11 |
| 6011141 | Acid polyazo dyes | Gunther Lamm, Helmut Reichelt | 2000-01-04 |
| 5972050 | Dye mixtures containing polyazo dyes and CI Sulphur Black 1 dye | Johannes P. Dix, Rolf Streicher, Manfred Herrmann, Gunther Lamm | 1999-10-26 |
| 5910623 | Mixtures of sulfo-containing 1:2 metal complexes with vinyl polymers | Knut Kessel, Manfred Patsch, Manfred Herrmann, Kurt Reiner, Jorg Jessen | 1999-06-08 |
| 5654122 | N-aminopyridone dyes | Karl-Heinz Etzbach, Ernst Schefczik, Ruediger Sens | 1997-08-05 |
| 5621107 | Sulfopyridones and a process of making therefor | Gunther Lamm, Helmut Reichelt | 1997-04-15 |
| RE35407 | Azo dye polymers | Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach, Heike Kilburg | 1996-12-17 |
| 5580980 | N-aminopyridone dyes | Karl-Heinz Etzbach, Ernst Schefczik, Ruediger Sens | 1996-12-03 |
| 5554737 | Doubled acid azo dyes with a hydroxypyridone coupling component | Gunther Lamm, Helmut Reichelt | 1996-09-10 |
| 5461131 | Azo dye polymers | Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach, Heike Kilburg | 1995-10-24 |
| 5449762 | Phenylazo- or naphthylazobenzenes having thioether groups | Bernd Siegel, Manfred Patsch | 1995-09-12 |
| 5434231 | Azo dye polymers | Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach, Heike Kilburg | 1995-07-18 |
| 5428140 | Preparation of phenylazo- or naphthylazobenzenes having thioether groups | Bernd Siegel, Manfred Patsch | 1995-06-27 |
| 5391719 | Preparation of aminoformazans | Klaus Pandl, Manfred Patsch | 1995-02-21 |
| 5298610 | Thiazoleazo dyes having a coupling component of the diphenylamine series | Erwin Hahn, Helmut Reichelt, Sabine Gruettner-Merten | 1994-03-29 |
| 5264507 | Azo dye polymers | Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach, Heike Kilburg | 1993-11-23 |
| 5260446 | Aminothiazoles | Karl-Heinz Etzbach, Sabine Gruettner, Helmut Reichelt | 1993-11-09 |
| 5206376 | Preparation of 2-amino-5-formyl-4-halothiazoles | Karl-Heinz Etzbach | 1993-04-27 |
| 5147845 | Triazolopyridine dyes and thermal transfer of methine dyes | Ruediger Sens, Ernst Schefczik, Karl-Heinz Etzbach, Gunther Lamm, Helmut Reichelt | 1992-09-15 |
| 5145828 | Transfer of azo dyes | Karl-Heinz Etzbach, Ruediger Sens | 1992-09-08 |
| 5079365 | Triazolopyridine dyes and thermal transfer of methine dyes | Rudiger Sens, Ernst Schefczik, Karl-Heinz Etzbach, Gunther Lamm, Helmut Reichelt | 1992-01-07 |
| 5064962 | Diaminothiophenes | Karl-Heinz Etzbach | 1991-11-12 |
| 5059684 | Azo dyes whose diazo and coupling components stem from the thiazole series | Gunther Lamm, Karl-Heinz Etzbach, Guenter Hansen, Helmut Reichelt | 1991-10-22 |
| 5003081 | Pyrrole derivatives useful as diazo and coupling components | Juergen Pfister, Karl-Heinz Etzbach | 1991-03-26 |