Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › 1:2 chromium or cobalt metal complex dyes and use thereof for dyeing leather

1:2 chromium or cobalt metal complex dyes and use thereof for dyeing leather

US Patent 4710198 · Granted Dec 1, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Fibre-reactive 1:1 chromium complex azo or azomethine dyes having a bidentate ch1991
Fibre-reaction 1:1 chromium complex azo or azomethine dyes having a bidentate ch1991
Asymmetric 1:2-chrome complexes of benzene-azo-naphthalene/naphthalene-azo-napht1990
Asymmetrical polyazo chromium complex dyes comprising resorcinol as a coupling c1989
Fiber-reactive chromium complexes and their preparation and use for polyamide, l1989
Process for the trichromatic dyeing of leather1989
Fibre-reactive chromium complexes and their preparation and use1988
Process for the photochemical stabilization of synthetic polyamide fibre materia1987
Metal dye complexes containing an azo or azomethine dye and a colorless ligand w1987
Bis 1:2 chromium complexes of disazo and azo or azomethine dyes1987
Bis 1:2 chromium complexes of disazo and azo or azomethine dyes1987
Chrome azo and/or azomethine dyes containing a benzthiazolylphenyl or stilbenyl 1987