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Expired European patentEurope

Superconducting device having an extremely short superconducting channel formed of oxide superconductor material and method for manufacturing the same

EP 0484232 B1 · Applicant: Sumitomo Electric Industries, Ltd.

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed October 29, 1991 and granted April 19, 1995. A European patent lasts at most 20 years from filing, so its term ended October 29, 2011.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by April 29, 2017.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledOctober 29, 1991
PublishedMay 6, 1992
GrantedApril 19, 1995
Term endedOctober 29, 2011
Application numberEP 91402900
Classification (CPC)H10N60/207

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Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

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