Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Silver halide developing agents

Silver halide developing agents

US Patent 4294915 · Granted Oct 13, 1981

Estimated economic value: $2,198,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Novel pyrazole compounds having silver halide development groups1988
Azo and azomethine dye developers1987
Chrome complexed azo or azomethine hexadentate dyes1983
Silver halide developing agents1982
Color synthesizing1981
Chrome complexed magenta dye developers1981
Chrome complexed magenta dye developers1981
Novel azo dyes1981
Yellow 2:1 azo-azo or azo-azomethine chrome complexed dye developers1981
Yellow azomethine dye developers1980
I.D. cards1980
Ortho-carboxyphenyl azo ortho-hydroxypyrazole yellow dyes having silver halide d1980