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Expired Canadian patentCanada

A method of syntactic pattern recognition of sequences

CA 2608772 C · Owner: 3618633 Canada Inc. · Inventors: Oommen, John B.; Badr, Ghada

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Abstract From the Canadian patent

This invention relates to the Pattern Recognition (PR) of noisy/inexact strings and sequences and particularly to syntactic Pattern Recognition. The present invention presents a process by which user can recognize an unknown sting X, which is an element of a finite but possibly larger Dictionary, H, by processing the information contained in its noisy/inexact version Y, where , Y is assumed to contain substitution insertion or deletion errors. The , recognized string which is the best estimate X+ of X, is defined as that element of H which minimizes the Generalized Levenshtein Distance D(X Y) , between X and Y, for all X < H. Rather than evaluate D(X5Y) for every X < H sequentially, …

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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 April 4, 2006 and granted June 18, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2026.
  • 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.
FiledApril 4, 2006
GrantedJune 18, 2013
Term endedApril 4, 2026
Patent numberCA 2608772 C
Classification (IPC)G06K9/62 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedApril 4, 2006Patent grantedJune 18, 2013Term endedApril 4, 2026

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