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Expired Canadian patentCanada

Method and apparatus of mechanical stage positioning in virtual microscopy image capture

CA 2576183 C · Owner: Olympus America Inc. · Inventors: Bacus, James V.; Bacus, James W.

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Abstract From the Canadian patent

A method and apparatus for creating a magnified composite image of a microscope specimen comprises making error corrections for imprecise movements of the specimen relative to an objective lens when capturing data for first and second images. A correction offset is computed based on a comparison of data for overlapped portions of the first and second images and then the specimen is moved through a distance modified by the correction offset for capture of a subsequent tiled image. Image center portions are retained as the data structure tile. The area about the center portion is used to align images and to compensate for stage inaccuracies and to provide a feedback signal for a …

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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

  • Filed August 15, 2005 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 15, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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, 2005
GrantedApril 2, 2013
Term endedAugust 15, 2025
Patent numberCA 2576183 C
Classification (IPC)G02B21/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedAug 15, 2005Patent grantedApril 2, 2013Term endedAug 15, 2025

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