Catalytic activation of cobalt complex imaging by cobalt sulfide
CA 1073257 A · Owner: Eastman Kodak Company · Inventors: Brault, Albert T.; Wilkes, Glenn, R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An imaging system and process wherein an element comprising a cobalt complex-developer radox system is catalyzed by cobalt sulfide. The cobalt sulfide can be imagewise produced by exposing a photoraducible cobalt complex in the presence of a thioamide or it can be uniformly, distributes and either masked in an imagewise fashion or, reacted with imagewise distributed color developing agent.
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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 March 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 1997.
- 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.