Diazo imaging system
CA 1050325 A · Owner: Eastman Kodak Company · Inventors: Bissonette, Vernon L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A method of producing an azo dye image by contacting an imagewise distribution of a material capable of catalyzing the decomposition of a base releasing complex of a transition metal in a hydrophilic matrix with a hydrophobic layer containing a diazonium compound in the presence of an azo dye forming coupler and an aqueous solution of the base releasing transition metal complex whereupon the base liberated by the decomposition of the base releasing complex initiates coupling between the diazonium compound and the azo dye forming coupler to produce an azo dye image corresponding to the imagewise distribution of the catalytic material in the matrix. According to a …
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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 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
- 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.