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Expired Canadian patentCanada

Electrostatographic imaging system

CA 1203109 A · Owner: Xerox Corporation · Inventors: Teuscher, Leon A.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An electrostatographic imaging member having two electrically operative layers including a charge transport layer and a charge generating layer, the electrically operative layers overlying a siloxane film coated on a metal oxide layer of a metal conductive anode said siloxane film, comprising a reaction product of a hydrolyzed silane having the following genera formula:, wherein R1 is an alkylidene group containing 1 to 2? carbon atoms and R2, and R3, are independently selected form the group consisting of H a lower, alkyl group containing 1 to 3 carbon atoms a phenyl group, and a, poly(ethylene-amino) group said siloxane having reactive OH and, ammonium groups attached to silicon atoms.

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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 April 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 15, 1983
GrantedApril 15, 1986
Term endedApril 15, 2003
Patent numberCA 1203109 A
Classification (IPC)G03G5/14 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedAug 15, 1983Patent grantedApril 15, 1986Term endedApril 15, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.