Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4914211 | Pigment compositions | Abul Iqbal, Alain C. Rochat | 1990-04-03 |
| 4892945 | Isoindoline pigments containing at least one triazolopyrimidone radical | Kurt Burdeska, Jost von der Crone | 1990-01-09 |
| 4863522 | Novel compositions based on C.I. Pigment Red 177 | Edward E. Jaffe, Philippe Bugnon | 1989-09-05 |
| 4791204 | 1,4-diketopyrrolo[3,4-c]pyrrole pigments | Abul Iqbal, Alain C. Rochat | 1988-12-13 |
| 4666455 | Compositions pigmented with N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles | Abul Iqbal, Alain C. Rochat | 1987-05-19 |
| 4585878 | N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles | Abul Iqbal, Alain C. Rochat | 1986-04-29 |
| 4431721 | Use of perylene pigments for photoelectrophoretic imaging | Werner Sieber | 1984-02-14 |
| 4344767 | Process for coloring linear polyesters in the melt | Gerhard Umsonst, Hans P. Kolliker | 1982-08-17 |
| 4341896 | 1-Hydroxy-4-heteroarylaminoanthraquinones | — | 1982-07-27 |
| 4292232 | Process for the mass coloration of thermoplastics with anthraquinonylaminotraizines | Joachim Dazzi, Arnold Wick | 1981-09-29 |
| 4276213 | Process for the coloration of organic material of high molecular weight in the melt with anthraquinone dyes | — | 1981-06-30 |