Use of an acylamino compound to produce a permanent conductivity pattern
CA 1071454 A · Owner: Agfa-Gevaert Naamloze Vennootschap · Inventors: Gilliams, Yvan K.; Van Den Houte, Josef W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A recording material suited for the photographic production of a conductivity pattern, wherein said material contains a recording later applied to the surface of ? support the surface resistance of which is at least 100 times as small as that of the recording layer and wherein said recording layer contains in intimate admixture : (i) at least one ultraviolet radiation-sensitive organic polyhalogen compound from which photolytically halogencontaining free radicals can be separated (ii) a photoconductive polymer containing N-vinylcarbazole units and, (iii)as sensitizing agent increasing the conductivity of the recording layer during its photo-exposure an acylamino compound corresponding to …
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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 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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.