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Expired European patentEurope

An exhaust gas purification device for an engine

EP 0627548 B1 · Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

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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 May 30, 1994 and granted November 20, 1996. A European patent lasts at most 20 years from filing, so its term ended May 30, 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 November 30, 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.
FiledMay 30, 1994
PublishedDecember 7, 1994
GrantedNovember 20, 1996
Term endedMay 30, 2014
Application numberEP 94108318
Classification (CPC)F01N9/00 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMay 30, 1994PublishedDec 7, 1994Patent grantedNov 20, 1996Term endedMay 30, 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

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