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Expired Canadian patentCanada

Scanning optical apparatus

CA 1318802 C · Owner: Canon Kabushiki Kaisha · Inventors: Minoura, Kazuo; Shimoda, Isamu

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

A scanning optical apparatus comprises: a light source unit, optical system for converging a light beam from the light source unit at a predetermined position, moving device for moving the converged position of the light beam by the optical system; deflecting device for deflecting the light beam from the light source unit in a predetermined direction; light receiving device for receiving the light beam deflected by the deflecting device processing device for processing a signal obtained by said light receiving device, and control device for controlling the moving device correspondingly to a signal from the processing device, the light beam emitted from said light source unit being scanned …

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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 8, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 8, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1989
GrantedJune 8, 1993
Term endedJune 8, 2010
Patent numberCA 1318802 C
Classification (IPC)G06K15/12 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 18, 1989Patent grantedJune 8, 1993Term endedJune 8, 2010

Sources & verification

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