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Expired European patentEurope

METHOD FOR CHECKING THE EFFICIENCY OF AN NOx ACCUMULATION CATALYST

EP 1097299 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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 4, 1999 and granted September 6, 2006. A European patent lasts at most 20 years from filing, so its term ended May 4, 2019.
  • 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 4, 2024.
  • 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 4, 1999
PublishedMay 9, 2001
GrantedSeptember 6, 2006
Term endedMay 4, 2019
Application numberEP 99932619
Classification (CPC)F01N11/00 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMay 4, 1999PublishedMay 9, 2001Patent grantedSep 6, 2006Term endedMay 4, 2019

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.