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Expired Canadian patentCanada

Object inspection method and apparatus with enhanced signal to noise ratio and reduced image blurring

CA 1301372 C · Owner: Steele, Douglas S. · Inventors: Brown, James M. Jr.; Steele, Douglas S.

CIPO record

Overview

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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 object inspection apparatus and method produces images of preselected portions of an object with increased signal to noise ratio and reduced blurring. In a preferrred embodiment, this is accomplished through the use of a novel software averaging routine residing in a computer.

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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 4, 1987
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1301372 C
Classification (IPC)G01N23/04

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 4, 1987Patent grantedMay 19, 1992Term endedMay 19, 2009

Sources & verification

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