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Expired European patentEurope

Process and device for monitoring the operation of a catalytic converter

EP 0689641 B1 · Applicant: Emitec Gesellschaft für Emissionstechnologie mbH

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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 February 18, 1994 and granted May 28, 1997. A European patent lasts at most 20 years from filing, so its term ended February 18, 2014.
  • 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 August 18, 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.
FiledFebruary 18, 1994
PublishedJanuary 3, 1996
GrantedMay 28, 1997
Term endedFebruary 18, 2014
Application numberEP 94909003
Classification (CPC)F01N11/002

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedFeb 18, 1994PublishedJan 3, 1996Patent grantedMay 28, 1997Term endedFeb 18, 2014

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.