Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Tetrakisazo compounds having two 1-hydroxy-3- or 4-sulfo-6- or 7-amino- or substituted amino-naphthalene coupling component radicals the amino or substituted amino groups of which are linked 1,3,5-triazine rings

US Patent 4670547 · Granted Jun 2, 1987

Assignee

Inventors

View full patent text on Google Patents →