Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › 1,4-diketopyrrolo[3,4-c]pyrrole pigments

1,4-diketopyrrolo[3,4-c]pyrrole pigments

US Patent 4791204 · Granted Dec 13, 1988

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Coloring material and color filter2007
Electroluminescent devices comprising diketopyrrolopyrroles2006
Fluorescent diketopyrrolopyrrole analogues2006
Electroluminescent devices comprising diketopyrrolopyrroles2006
Coloring material and color filter2003
Preparation of alkylthio- and/or arylthio-substituted diketo-diaryl-pyrrolopyrro2003
Fluorescent pigments2002
Process for the preparation of fluorescent compositions, fluorescent composition2001
Fluorescent anthraquinoid pigments2001
Fluorescent pigments2001
Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles2001
Compositions for making structured color images and application thereof2001