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Expired European patentEurope

Method for controlling the temperature of a catalyst and multicylinder engine comprising a lambda splitting exhaust gas cleaning system

EP 1581733 B1 · Applicant: Volkswagen Aktiengesellschaft

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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 December 12, 2003 and granted June 7, 2006. A European patent lasts at most 20 years from filing, so its term ended December 12, 2023.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledDecember 12, 2003
PublishedOctober 5, 2005
GrantedJune 7, 2006
Term endedDecember 12, 2023
Application numberEP 03789253
Classification (CPC)F01N13/009 +2 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedDec 12, 2003PublishedOct 5, 2005Patent grantedJune 7, 2006Term endedDec 12, 2023

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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