EP0443453A1 — Silver halide photographic emulsion and photographic light-sensitive material using the same
Assigned to Fujifilm Holdings Corp · Expires 1991-08-28 · 35y expired
What this patent protects
A silver halide photographic emulsion contains tabular silver halide grains consisting of silver chloroiodobromide, silver iodobromide, silver chlorobromide, or silver bromide, having an aspect ratio of 3 or more and at least one dislocation line per grain, and chemically sensiti…
USPTO Abstract
A silver halide photographic emulsion contains tabular silver halide grains consisting of silver chloroiodobromide, silver iodobromide, silver chlorobromide, or silver bromide, having an aspect ratio of 3 or more and at least one dislocation line per grain, and chemically sensitized by at least one selenium sensitizer, at least one gold sensitizer, and at least one sulfur sensitizer. A photographic light-sensitive material comprises at least one silver halide emulsion layer on a support, wherein tabular silver halide grains described above account for at least 50% of a total projected area of silver halide grains in the silver halide emulsion layer.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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