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Expired Canadian patentCanada

Predicting sand-grain composition and sand texture

CA 2579011 C · Owner: Love, Karen M. · Inventors: Kairo, Suzanne; Heins, William A.; Love, Karen M.

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Abstract From the Canadian patent

A method and apparatus for predicting sand-grain composition and sand texture are disclosed. A first set of system variables associated with sand-grain composition and sand texture is selected (605). A second set of system variables directly or indirectly causally related to the first set of variables is also selected (610). Data for each variable in the second set is estimated or obtained (615). A network with nodes including both sets of variables is formed (625). The network has a directional links connecting interdependent nodes. The directional links honor known causality relationships. A Bayesian network algorithm is used (630) with the data to solve the network for the first …

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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 May 31, 2005 and granted April 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 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.
FiledMay 31, 2005
GrantedApril 8, 2014
Term endedMay 31, 2025
Patent numberCA 2579011 C
Classification (IPC)G01V9/00

Timeline

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2006200820102012201420162018202020222024Application filedMay 31, 2005Patent grantedApril 8, 2014Term endedMay 31, 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.