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Expired Canadian patentCanada

Cu-mo substrate and method for producing same

CA 2609252 C · Owner: Ishio, Masaaki · Inventors: Kikui, Fumiaki; Ishio, Masaaki; Shiomi, Kazuhiro

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A Cu-Mo substrate 10 according to the present invention includes: a Cu base 1 containing Cu as a main component; an Mo base having opposing first and second principal faces 2a 2b and containing Mo as a main component the second , principal face 2b of the Mo base 2 being positioned on at least a portion of a principal face la of the Cu base 1; and a first Sn-Cu-type alloy layer 3 covering the first principal face 2a and side faces 2c and 2d of the Mo base 2 the first , Sn-Cu-type alloy layer 3 containing no less than 1 mass% and no more than 13 mass% of Sn.

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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 23, 2006 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2026.
  • 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.
FiledMay 23, 2006
GrantedJanuary 10, 2012
Term endedMay 23, 2026
Patent numberCA 2609252 C
Classification (IPC)H01L23/14 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMay 23, 2006Patent grantedJan 10, 2012Term endedMay 23, 2026

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