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Expired Canadian patentCanada

Methods and articles for detecting, verifying, and repairing matrix collinearity

CA 2519783 C · Owner: Rasmussen, Kent H. · Inventors: Zheng, Qingsheng; Harmse, Magiel J.; Rasmussen, Kent H.

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Abstract From the Canadian patent

Systematic methods to detect, verify, and repair a collinear model are presented. After detecting collinearity in a model or subsets of a model a , directional test is carried out to verify if the collinearity is mal. The model can then be adjusted in either direction to making a near collinear model exactly collinear or less collinear subject to model uncertainty bounds , or other linear constraints. When doing the model adjustment deviations from , the original model are minimized and the directionality of the model is kept unchanged.

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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 March 19, 2004 and granted March 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 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.
FiledMarch 19, 2004
GrantedMarch 18, 2014
Term endedMarch 19, 2024
Patent numberCA 2519783 C
Classification (IPC)G05B13/04

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMarch 19, 2004Patent grantedMarch 18, 2014Term endedMarch 19, 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.