Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8123851 | Method of finishing organic pigments | Matthias Klueglein, Richard van Gelder, Wolfgang Best | 2012-02-28 |
| 5814140 | Pigment preparations suitable for water-thinnable printing inks and coatings | Hansulrich Reisacher | 1998-09-29 |
| 5432277 | Metal-free phthalocyanine of the .gamma.-form | Peter Boettcher, Peter Erk | 1995-07-11 |
| 5352729 | Use of pigment formulations for the preparation of pastes, printing inks and coatings | Hermann Birkhofer, Walter Denzinger, Heinrich Hartmann, Juan Antonio Gonzalez Gomez, Paul Guenthert +4 more | 1994-10-04 |
| 5344465 | Colorant mixtures containing azo compounds based on phenyloxadiazolylaniline | Horst Colberg | 1994-09-06 |
| 5324354 | Pigment formulations containing a pigment, a colorant having an external basic group and a surfactant | Juan Antonio Gonzalez Gomez, Gustav Bock, Paul Guenthert | 1994-06-28 |
| 5104991 | Preparation of phenyloxadiazolylanilines | Hartmut Kanter | 1992-04-14 |
| 4937338 | Pigments | Helmut Flohr, Bernhard Albert, Peter Neumann | 1990-06-26 |
| 4851549 | Pigments | Helmut Flohr, Bernhard Albert, Peter Neumann | 1989-07-25 |
| 4785088 | Pigments and their preparation | Helmut Flohr, Bernhard Albert, Peter Neumann | 1988-11-15 |
| 4664715 | Preparation of lakes having improved performance characteristics | — | 1987-05-12 |
| 4477381 | Triaminotriarylmethane colorants | Udo Mayer, Erwin Hahn | 1984-10-16 |
| 4456485 | Process for the preparation of easily dispersible, high color strength, powdered alkali blue pigments | Doreswamy R. Iyengar | 1984-06-26 |