Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4392999 | Monoazo pigments containing hydroxynaphthoylamino benzimidazolone radical | Rolf Muller, Paul Muller, Karl Ronco | 1983-07-12 |
| 4370431 | Process for coloring fibre forming polyamides in the melt with azo pigments | Paul Lienhard | 1983-01-25 |
| 4340430 | Azo pigments, process for their production and their use | — | 1982-07-20 |
| 4334932 | Pigment formulations, processes for their preparation and their use for pigmenting aqueous, alcoholic or aqueous-alcoholic printing ink systems and colored lacquer systems | — | 1982-06-15 |
| 4269976 | Pigment of sodium salt of bis-methine-barbituric acid | — | 1981-05-26 |
| 4229344 | Monazo pigments containing hydroxynaphthoylaminobenzimidazalone radical | Rolf Muller, Paul Muller, Karl Ronco | 1980-10-21 |
| 4220586 | Hetero-aryl azo acylamino substituted aceto-acetarylide pigments | Georg Cseh, Stefan Hari | 1980-09-02 |
| 4206114 | Monoazo pigments from diazotized 5-acylaminoanthranilic acid derivatives and acetoacetylaminobenzimidazolones | — | 1980-06-03 |