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Expired Canadian patentCanada

Method of manufacturing superconductive products

CA 1324482 C · Owner: Uno, Naoki · Inventors: Tanaka, Yasuzo; Uno, Naoki; Shiga, Shoji

CIPO record

Overview

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

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Abstract From the Canadian patent

The present invention provides a method of manufacturing superconductive products comprising heating a superconductive matter or incorporation including its precursor to a temperature higher than its or its precursor's melting point to melt it or its precursor and, then solidifying and cooling it in a direction in such a way that it is re-crystalized to have an orientation in the longitudinal direction of its incorporation.

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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 November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 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.
FiledAugust 19, 1988
GrantedNovember 23, 1993
Term endedNovember 23, 2010
Patent numberCA 1324482 C
Classification (IPC)H01L39/24 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 19, 1988Patent grantedNov 23, 1993Term endedNov 23, 2010

Sources & verification

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