Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |