Heat-developable color photographic material including compound which reduces silver halide and releases a hydrophilic dye
CA 1191375 A · Owner: Fuji Photo Film Co. Ltd. · Inventors: Hara, Hiroshi; Aono, Toshiaki; Sato, Kozo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-developable color photographic material is disclosed. The material is comprised of a support having thereon a layer containing at least a lightsensitive silver halide, a hydrophilic bin dye releasing activator and a dye releasing compound which reduces the silver halide and releases a hydrophilic dye. The heat-developable color photographic material can easily provide a clear and stable color image by imagewise exposure to light and a heat-development procedure. A method of forming a color image using the heat-developable color photographic material is also disclosed.
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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 August 6, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2002.
- 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.