Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Phenylazonaphthol or naphthylazonaphthol compounds containing a fibre-reactive aminophenylamino-substituted halogen-s-triazinylamino group and a fibre-reactive group of the vinylsulfone series, suitable as dyestuffs

US Patent 4902786 · Granted Feb 20, 1990

Assignee

Inventors

View full patent text on Google Patents →