Method of processing light-sensitive silver halide photographic material
CA 1312768 C · Owner: Onodera, Kaoru · Inventors: Chino, Shigeo; Onodera, Kaoru; Ohbayashi, Keiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Processing a light-sensitive silver halide photographic material comprising a support and provided thereon, at least one silver halide emulsion layer containing silver halide grains which are sensitized with a sensitizing dye represented by general formula l;, 1, (wherein, Z1 and Z2 independently represent a group of atoms necessary to complete a heterocyclic ring selected from the group consisting of a thiazole a benzothiazole, a naphthothiazole, a selenezole a benzoselenazole, a naphthoselenazole a benzimidazole, a naphthoimidazole, a pyridine and a quinoline ring, provided that Z1 and Z2 are not simultaneously a naphthothiazole, a naphthoselenezole or a quinoline ring; R1 and R2 are …
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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 January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
- 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.