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Expired European patentEurope

Devices for the detection of the transition into the normal state of a supraconducting winding, in particular of an electric generator, and for protecting such a winding

EP 0285513 B1 · Applicant: GEC ALSTHOM SA

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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 March 29, 1988 and granted November 11, 1992. A European patent lasts at most 20 years from filing, so its term ended March 29, 2008.
  • 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 September 29, 2013.
  • 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.
FiledMarch 29, 1988
PublishedOctober 5, 1988
GrantedNovember 11, 1992
Term endedMarch 29, 2008
Application numberEP 88400763
Classification (CPC)H02H7/001

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedMarch 29, 1988PublishedOct 5, 1988Patent grantedNov 11, 1992Term endedMarch 29, 2008

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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