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Canadian application, no grantCanada

Compound superconductive wires and a method for producing the same

CA 2054882 A1 · Owner: The Furukawa Electric Co. Ltd. · Inventors: Yamada, Kiyoshi; Tanaka, Yasuzo

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 compound superconductive wire has an elongate member formed of an A3B compound superconductor and an alloy member which is formed of an alloy of metal A and copper, the metal A being the constituent element of the A3B compound superconductor, and which is longitudinally mounted along with the elongate member such that the alloy member contacts with the elongate member. A method for producing a compound superconductive wire has the steps of mounting an alloy member formed of metal A and copper, the metal A being the constituent element of an A3B compound superconductor, to an elongate member formed of metal B or an alloy of mainly formed of the metal B, the metal B being the constituent …

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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 November 4, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 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.
FiledNovember 4, 1991
GrantedNo grant recorded
Term endedNovember 4, 2011
Patent numberCA 2054882 A1
Classification (IPC)H01B12/04 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedNov 4, 1991Term endedNov 4, 2011

Sources & verification

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