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Expired European patentEurope

Method of monitoring a butt weld between metal strips

EP 0512972 B1 · Applicant: CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif

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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 May 4, 1992 and granted January 10, 1996. A European patent lasts at most 20 years from filing, so its term ended May 4, 2012.
  • 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 November 4, 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.
FiledMay 4, 1992
PublishedNovember 11, 1992
GrantedJanuary 10, 1996
Term endedMay 4, 2012
Application numberEP 92870066
Classification (CPC)B23K31/12

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedMay 4, 1992PublishedNov 11, 1992Patent grantedJan 10, 1996Term endedMay 4, 2012

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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