| 6933371 |
Bisazo dyestuffs based on hydroxynaphthalene carboxylic acid |
Gunter Schroder, Sophia Ebert, Karl-Heinz Etzbach, Rudiger Sens |
2005-08-23 |
| 6903197 |
Azoxy dyes and copper complexes thereof |
Karl-Heinz Etzbach, Rudiger Sens, Claudia Krah |
2005-06-07 |
| 6846956 |
Triarylmethane dyes |
Hellmut Kast, Thomas Gessner |
2005-01-25 |
| 6743901 |
Preparation of liquid formulations of basic azo dyes |
Michael Schmitt, Roland Merger |
2004-06-01 |
| 6727351 |
Azoxy dyes and their Cu complexes |
Karl-Heinz Etzbach, Rudiger Sens, Claudia Krah |
2004-04-27 |
| 6673206 |
Method of producing paper, paperboard and cardboard |
Friedrich Linhart, Bernd Dirks, Bernhard Mohr, Dietrich Fehringer |
2004-01-06 |
| 6346609 |
Cationic azo-dyes |
Karl-Heinz Etzbach, Torsten Freund |
2002-02-12 |
| 6048968 |
Cationic azo dyes based on aminobenzoic acid |
Karl-Heinz Etzbach, Torsten Freund |
2000-04-11 |
| 6048969 |
Cationic sulfonic acid dyes |
Gunter Schroder, Udo Mayer |
2000-04-11 |
| 5098521 |
Production of paper, board and cardboard from paper stocks containing foreign materials |
Enrique Freudenberg, Friedrich Linhart, Heinrich Hartmann, Walter Denzinger, Michael Kroener +1 more |
1992-03-24 |
