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Expired Canadian patentCanada

High strength amorphous alloy

CA 2037818 C · Owner: Horimura, Hiroyuki · Inventors: Masumoto, Tsuyoshi; Kita, Kazuhiko; Yamaguchi, Hitoshi

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Abstract From the Canadian patent

A high strength amorphous alloy comprises an amorphous phase containing a predominant metal element a first additive, element consisting rare earth element(s) and a second, additive element consisting of element(s) other than rare earth elements and forming a matrix, and a crystalline phase containing the predominant metal element and the first and second additive elements and dispersed homogeneously in the amorphous phase with the first and second additive elements formed into a supersaturated solid solution. The content of the predominant metal element in the crystalline phase is set in a range of at least 85% by atom to at most 99.8% by atom. If the rare earth element ratio value CR in …

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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 8, 1991 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2013.
  • 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 8, 1991
GrantedJuly 7, 1998
Term endedMarch 8, 2011
Patent numberCA 2037818 C
Classification (IPC)C22C45/00

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedMarch 8, 1991Patent grantedJuly 7, 1998Term endedMarch 8, 2011

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