| 7341626 |
Pigment compositions consisting of organic and inorganic pigments |
Joachim Weber |
2008-03-11 |
| 7311769 |
Pigment compositions consisting of a yellow disazo pigment and an organic pigment |
Joachim Weber, Frank Alfter, Hans-Tobias Macholdt |
2007-12-25 |
| 6918958 |
Acid pigment dispersants and pigment preparations |
Joachim Weber, Klaus Brychcy, Erwin Dietz |
2005-07-19 |
| 6646126 |
Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form |
Joachim Weber, Manfred Urban, Martin Bohmer, Erwin Dietz |
2003-11-11 |
| 6521756 |
Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form |
Joachim Weber, Manfred Urban, Martin Bohmer, Erwin Dietz |
2003-02-18 |
| 5614015 |
Process for the preparation of 4,10-dibromoanthanthrone pigment |
Manfred Urban |
1997-03-25 |
