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Expired European patentEurope

Method of making metal plates with variable thickness

EP 0823297 B1 · Applicant: RECHERCHE ET DEVELOPPEMENT DU GROUPE COCKERILL SAMBRE, en abrégé: RD-CS

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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 July 24, 1997 and granted August 28, 2002. A European patent lasts at most 20 years from filing, so its term ended July 24, 2017.
  • 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 January 24, 2023.
  • 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.
FiledJuly 24, 1997
PublishedFebruary 11, 1998
GrantedAugust 28, 2002
Term endedJuly 24, 2017
Application numberEP 97202304
Classification (CPC)B21D49/005

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedJuly 24, 1997PublishedFeb 11, 1998Patent grantedAug 28, 2002Term endedJuly 24, 2017

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

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