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Expired European patentEurope

Method and device to hydraulically expand tubular hollow profiles

EP 0497438 B1 · Applicant: MANNESMANN Aktiengesellschaft

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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 January 28, 1992 and granted July 13, 1994. A European patent lasts at most 20 years from filing, so its term ended January 28, 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 July 28, 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.
FiledJanuary 28, 1992
PublishedAugust 5, 1992
GrantedJuly 13, 1994
Term endedJanuary 28, 2012
Application numberEP 92250022
Classification (CPC)B21D53/90 +1 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJan 28, 1992PublishedAug 5, 1992Patent grantedJuly 13, 1994Term endedJan 28, 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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