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Expired Canadian patentCanada

Method of wood strength and stiffness prediction

CA 2530919 C · Owner: Usnr/Kockums Cancar Company · Inventors: Woods, Steve; Biernacki, Jacek; Lahoda, Ron

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Abstract From the Canadian patent

A method of non-destructive testing of a wood piece using a multiplicity of sensors. The method may include the steps of sensing the wood piece; collecting information from the sensors; and integrating the information into a physical model providing for strength and stiffness prediction. The collected information relate to material characteristics of the wood piece and to fiber quality characteristics of the wood piece. The material characteristics may include one or more of the following material characteristics of the wood piece: growth ring thickness; grain angle deviation; clear wood density; knot location; knot density; knot type; knot size; location in the tree from which the …

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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 26, 2004 and granted December 19, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2026.
  • 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 26, 2004
GrantedDecember 19, 2017
Term endedMay 26, 2024
Patent numberCA 2530919 C
Classification (IPC)G01N33/46

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 26, 2004Patent grantedDec 19, 2017Term endedMay 26, 2024

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