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Expired Canadian patentCanada

Method for producing reinforced block material of metal or the like

CA 1313800 C · Owner: Kawamura, Yuzo · Inventors: Nakagawa, Sigeo; Kawamura, Yuzo

CIPO record

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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 method for producing a reinforced block material of a crystalline material such as a metal or the like. Has enabled the block-like molding of a reinforced material of the crystalline material which has been able to be formed hitherto in fiber-like or film-like shape only by making it amorphous or crystallized in a miniaturised grain structure. Miniaturising the crystals of the crystalline material intends to reinforce the material by rapidly cooling the material in a molten state, and the same time by giving, large deformation by use of less deformation energy and, together with that, the production procedure is simplified by enabling the molding of the material to a block-like shape to …

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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

  • Granted February 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 23, 1988
GrantedFebruary 23, 1993
Term endedFebruary 23, 2010
Patent numberCA 1313800 C
Classification (IPC)B22D19/08 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 23, 1988Patent grantedFeb 23, 1993Term endedFeb 23, 2010

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