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Expired European patentEurope

Superconductive cable withstand voltage test method

EP 1847841 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 12, 2005 and granted December 31, 2014. A European patent lasts at most 20 years from filing, so its term ended October 12, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 12, 2005
PublishedOctober 24, 2007
GrantedDecember 31, 2014
Term endedOctober 12, 2025
Application numberEP 05793138
Classification (CPC)G01R31/1254

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedOct 12, 2005PublishedOct 24, 2007Patent grantedDec 31, 2014Term endedOct 12, 2025

Sources & verification

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

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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