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Expired European patentEurope

Method and apparatus for ultrasonic testing of ferromagnetic work-pieces

EP 0532142 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 September 10, 1992 and granted February 14, 1996. A European patent lasts at most 20 years from filing, so its term ended September 10, 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 March 10, 2018.
  • 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.
FiledSeptember 10, 1992
PublishedMarch 17, 1993
GrantedFebruary 14, 1996
Term endedSeptember 10, 2012
Application numberEP 92250255
Classification (CPC)G01N29/2412 +1 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedSep 10, 1992PublishedMarch 17, 1993Patent grantedFeb 14, 1996Term endedSep 10, 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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