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Expired European patentEurope

Circuit for measuring impedance in the heart

EP 0660736 B1 · Applicant: BIOTRONIK Mess- und Therapiegeräte GmbH & Co Ingenieurbüro Berlin

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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 16, 1993 and granted March 5, 1997. A European patent lasts at most 20 years from filing, so its term ended September 16, 2013.
  • 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 16, 2019.
  • 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 16, 1993
PublishedJuly 5, 1995
GrantedMarch 5, 1997
Term endedSeptember 16, 2013
Application numberEP 93919017
Classification (CPC)A61N1/36521

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedSep 16, 1993PublishedJuly 5, 1995Patent grantedMarch 5, 1997Term endedSep 16, 2013

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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