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Expired European patentEurope

Air control valve and method for engine exhaust gas treatment

EP 1184546 B1 · Applicant: Siemens Automotive Inc.

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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 August 15, 2001 and granted October 13, 2004. A European patent lasts at most 20 years from filing, so its term ended August 15, 2021.
  • 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.
FiledAugust 15, 2001
PublishedMarch 6, 2002
GrantedOctober 13, 2004
Term endedAugust 15, 2021
Application numberEP 01203115
Classification (CPC)F01N3/22 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedAug 15, 2001PublishedMarch 6, 2002Patent grantedOct 13, 2004Term endedAug 15, 2021

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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