Silver halide color photo-sensitive material
CA 1257805 A · Owner: Konishiroku Photo Industry Co. Ltd. · Inventors: Shinozaki, Kaoru; Kawakatsu, Satoshi; Katoh, Katsunori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure describes a silver halide color photographic light-sensitive material comprising a reflective support bearing thereon a green light sensitive silver halide emulsion layer containing a magenta forming coupler represented by Formula (I): a blue light-sensitive silver halide emulsion layer containing a yellow-forming coupler represented by the following formula (II); and a red light-sensitive silver halide emulsion layer containing a cyan-forming coupler represented by the following Formula (III) or (IV). Formula I, II, III and IV are as follows: Formula (I), wherein R1 represents a tertiary alkyl group; R2 represents an alkyl group or an aryl group; and X represents a split-off …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 25, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 25, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.