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Expired European patentEurope

Frame structure for a magnet assembly for use in a magnetic-resonance imaging apparatus

EP 0243669 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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Overview

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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 23, 1987 and granted April 10, 1991. A European patent lasts at most 20 years from filing, so its term ended March 23, 2007.
  • 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 23, 2012.
  • 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 23, 1987
PublishedNovember 4, 1987
GrantedApril 10, 1991
Term endedMarch 23, 2007
Application numberEP 87104226
Classification (CPC)G01R33/421 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedMarch 23, 1987PublishedNov 4, 1987Patent grantedApril 10, 1991Term endedMarch 23, 2007

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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