Photosensitive compositions containing vanadyl phthalocyanine and a phenzine desensitizing dye
CA 1103972 A · Owner: Xerox Corporation · Inventors: Grushkin, Bernard; Kyriakakis, Basil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are photosensitive compositions containing vanadyl phthalocyanine pigment and minor amounts of at least one compound of the formula, wherein X and Z are independently selected from the group consisting of -NH2, and -NHR; R is phenyl or phenylsulfonate;, Y is phenyl; and m and n can range from 0 to 2, with, the proviso that either m or n is at least 1, In practice such compositions are rountinely dispersed in an insulating carrier fluid and the resultant dispersion employed in photoelectrophoretic imaging processes. -2-
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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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- 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.