Silver halide photographic light-sensitive material and processing method therefor
CA 1333344 C · Owner: Kajiwara, Makoto · Inventors: Okumura, Mitsuhiro; Tanaka, Shigeo; Kajiwara, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A silver halide photographic light-sensitive material containing inorganic sulfur or elemental sulfur and a, processing method comprising a step for developing such photographic material with a color developer which contains aan aromatic primary amine compound for not more than 60 seconds. Photographic image improved in contrast of the without degradation in sensitivity and fogging can be obtained by the photographic material and the processing method.
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 December 6, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 6, 2011.
- 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.