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Expired Canadian patentCanada

Image identification system

CA 2817686 C · Owner: Bio-Key International, Inc. · Inventors: Lacous, Mira K.; Wittig, Benedict (Deceased); Wendt, Barry M.

CIPO record

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Abstract From the Canadian patent

Methods and procedures for improving the performance and reliability of image analysis within an image identification system (10) include a series of image qualification functions designed to quickly process a fraction of available image data and to provide feedback to a system user pertaining to image quality and authenticity. Functions designed to produce image models based on original image data and to catalogue such image models into a searchable database (16) are included in the present invention. The present invention also includes functions for comparing one image model to another. Finally the present invention provides functions for making a quick determination as to which if any, …

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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 November 15, 2002 and granted March 31, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 2002
GrantedMarch 31, 2015
Term endedNovember 15, 2022
Patent numberCA 2817686 C
Classification (IPC)—

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedNov 15, 2002Patent grantedMarch 31, 2015Term endedNov 15, 2022

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