Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7105674 | Perylene-derivative based crystallization modifiers | Claus Hackmann, Anton Dotter, Peter Blaschka | 2006-09-12 |
| 5554782 | Preparation of dicyanobenzenes by ammonoxidation | Clemens Grund, Guenther Glas, Helmut Reichelt, Rainer Becker, Arno Lange +1 more | 1996-09-10 |
| 5371232 | Preparation of 2-(4-aminophenyl)benzothiazole compounds | Christoph Bomba, Guido Kuth, Erwin Hahn | 1994-12-06 |
| 5352729 | Use of pigment formulations for the preparation of pastes, printing inks and coatings | Hermann Birkhofer, Walter Denzinger, Heinrich Hartmann, Juan Antonio Gonzalez Gomez, Joachim Jesse +4 more | 1994-10-04 |
| 5324354 | Pigment formulations containing a pigment, a colorant having an external basic group and a surfactant | Joachim Jesse, Juan Antonio Gonzalez Gomez, Gustav Bock | 1994-06-28 |
| 4983185 | Dyeing of leather with pigments | Rolf Streicher, Ortwin Schaffer, Horst Belde | 1991-01-08 |
| 4264488 | Coloring of thermoplastics | Georg Henning | 1981-04-28 |
| 4262851 | Process for converting crude and/or coarsely crystalline perylenetetracarboxylic acid diimides to a pigmentary form | Fritz Graser | 1981-04-21 |
| 4248635 | High-hiding calcium color lakes having great full-shade brillance and improved lightfastness | Georg Henning | 1981-02-03 |