Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Reactive phthalocyanine dyestuffs

Reactive phthalocyanine dyestuffs

US Patent 5070193 · Granted Dec 3, 1991

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Optical data carrier comprising a cyanine dye as light-absorbent compound in the2006
Optical recording medium2005
Optical data carrier comprising a phthalocyanine dye as light-absorbent compound2005
Preparation of 1-amino-4-hydroxyanthraquinones2005
Preparation of styryl dyes2005
Crystal form of a perinone dye2005
Optical data carrier comprising a cyanine dye as light-absorbent compound in the2004
Bridged perinones/quinophthalones2004
Preparation of styryl compounds2004
Optical data store comprising an axially substituted cobalt phthalocyanine in th2004
Optical data storage medium containing a diaza hemicyanine dye as the light-abso2004
Optical data stores containing a Co-phthalocyanine complex in the information la2004