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Expired Canadian patentCanada

Real-time system and method of monitoring transient operations in continuous casting process for breakout prevention

CA 2497489 C · Owner: Dofasco Inc. · Inventors: Zhang, Yale; Dudzic, Michael S.

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Abstract From the Canadian patent

A real-time system and method for online monitoring a transient operation in a continuous casting process. The transient operation refers to but is not limited to, submerged entry nozzle changes flying tundish changes, product grade changes etc. This invention treats the aforementioned transient operations as batch processes and utilizes multiway principal component analysis to develop a multivariate statistical model to characterize normal process transitions based on carefully selected historical process data. Such a model is used by an online monitoring system to determine if a continuous caster transient operation is normal. This monitoring system can further be used to predict an …

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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 February 17, 2005 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 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.
FiledFebruary 17, 2005
GrantedJanuary 3, 2012
Term endedFebruary 17, 2025
Patent numberCA 2497489 C
Classification (IPC)B22D11/16

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2006200820102012201420162018202020222024Application filedFeb 17, 2005Patent grantedJan 3, 2012Term endedFeb 17, 2025

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