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Expired Canadian patentCanada

Method of modifying iron based glasses to increase crystallization temperature without changing melting temperature

CA 2516218 C · Owner: The Nanosteel Company · Inventors: Branagan, Daniel James

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Abstract From the Canadian patent

An alloy design approach to modify and improve existing iron based glasses. The modification is related to increasing the stability of the glass which , results in increased crystallization temperature and increasing the reduced , crystallization temperature (Tcrystaiiization/Tmelting) which leads to a , critical cooling rate for metallic glass formation. The modification to the iron alloys includes the addition of lanthanide elements including , gadolinium. The resulting properties of such a modified alloy are compared to those of an unmodified alloy in Figure 1.

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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 13, 2004 and granted January 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 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.
FiledFebruary 13, 2004
GrantedJanuary 28, 2014
Term endedFebruary 13, 2024
Patent numberCA 2516218 C
Classification (IPC)C22C45/02 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedFeb 13, 2004Patent grantedJan 28, 2014Term endedFeb 13, 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.