Method of processing a silver halide photographic material
CA 1265374 C · Owner: Koboshi, Shigeharu · Inventors: Kuse, Satoru; Koboshi, Shigeharu; Ishikawa, Masao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method disclosed comprises color-developing the silver halide color photographic material which contains a cyan coupler represented by the following formula:, wherein one of R1 and R' represents hydrogen and the other thereof represents a straight or branched alkyl group having at least 2 to 12 carbon atoms; X represents hydrogen or a group capable of splitting off with a coupling reaction; and R2 represents a ballast group. Thereafter the material is treated with a processing solution having a fixing capability, and in succession the material is processed in a stabilizing treatment step not including any substantial washing step. The stabilizing solution to be used in the stabilizing …
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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 February 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 2007.
- 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.