Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Hair dye compositions and new compounds useful therein

Hair dye compositions and new compounds useful therein

US Patent 4417896 · Granted Nov 29, 1983

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Dyeing compositions for keratin fibres, based on 3-nitro-ortho-phenylenediamines1993
Nitroanilines and hair-dyeing compositions in which they are present1992
Dyeing compositions for kerating fibres based on nitroanilines and nitroanilines1991
New substituted metaaminophenols, a process for their preparation, hair-dyeing c1991
Process for the preparation of nitroanilines1990
Substituted metaaminophenols, a process for their preparation, hair-dyeing compo1990
Compounds which can be used for hair dyeing, process for their preparation, dyei1989
Dyeing composition for human hair containing an azo dye1989
Substituted metaaminophenols, a process for their preparation, hair dyeing compo1989
New dimethyl derivatives of 3-nitro-4-aminoaniline, process for their preparatio1988
Indoaniline and indophenol compounds, a process for their preparation, dyeing co1987
Process for producing indoanilines and keratin fiber dye composition containing 1987