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Expired Canadian patentCanada

Document feeder for moving platen copiers

CA 1291491 C · Owner: Xerox Corporation · Inventors: Kuo, Youti; Shinbrot, Troy

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

In a copier with a moving platen document imaging system wherein the platen is a part of a moving platen unit reciprocally driven relative to the stationary body of the copier with a document on, and, moving with, the platen being imaged by the copier in an imaging movement of the moving platen unit, the improvement including an automatic document feeder for automatically feeding documents on to and off of the platen solely utilizing the reciprocal movement of the moving platen unit, including a document feeding system mounted to the moving platen unit for reciprocal movement therewith but rotatable relative to the platen for movement of documents relative to the platen and a motion, …

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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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2008.
  • 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 18, 1987
GrantedOctober 29, 1991
Term endedOctober 29, 2008
Patent numberCA 1291491 C
Classification (IPC)G03B27/62 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedAug 18, 1987Patent grantedOct 29, 1991Term endedOct 29, 2008

Sources & verification

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