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Expired Canadian patentCanada

Associating features with entities, such as categories or web page documents, and/or weighting such features

CA 2592741 C · Owner: Google, Inc. · Inventors: Koningstein, Ross; Spitkovsky, Valentin; Lawrence, Stephen

CIPO record

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Abstract From the Canadian patent

Features that may be used to represent relevance information (e.g. properties characteristics, etc.) of an entity, such as a document o concept for example, may be associated with the document by accepting an identifier that identifies a document; obtaining search query information (and/or other serving parameter information) related to the document using the document identifier, determining features using the obtained query information (and/or other serving parameter information), and associating the features determined with the document. Weights of such features may be similarly determined. The weights may be determined using scores. The scores may be a function of one or more of …

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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 December 21, 2005 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 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.
FiledDecember 21, 2005
GrantedApril 10, 2012
Term endedDecember 21, 2025
Patent numberCA 2592741 C
Classification (IPC)G06F17/30 +1 more

Timeline

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2006200820102012201420162018202020222024Application filedDec 21, 2005Patent grantedApril 10, 2012Term endedDec 21, 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.