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Expired European patentEurope

Exhaust gas recirculation system for an internal combustion engine

EP 0489263 B1 · Applicant: Mazda Motor Corporation

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 November 5, 1991 and granted March 10, 1999. A European patent lasts at most 20 years from filing, so its term ended November 5, 2011.
  • 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 May 5, 2017.
  • 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.
FiledNovember 5, 1991
PublishedJune 10, 1992
GrantedMarch 10, 1999
Term endedNovember 5, 2011
Application numberEP 91118856
Classification (CPC)F02M26/03 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedNov 5, 1991PublishedJune 10, 1992Patent grantedMarch 10, 1999Term endedNov 5, 2011

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.