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Expired European patentEurope

Variable mechanical valve control for an internal combustion engine

EP 1853797 B1 · Applicant: Hydraulik-Ring GmbH

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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 March 2, 2006 and granted February 16, 2011. A European patent lasts at most 20 years from filing, so its term ended March 2, 2026.
  • 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.
FiledMarch 2, 2006
PublishedNovember 14, 2007
GrantedFebruary 16, 2011
Term endedMarch 2, 2026
Application numberEP 06723176
Classification (CPC)F01L1/26 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedMarch 2, 2006PublishedNov 14, 2007Patent grantedFeb 16, 2011Term endedMarch 2, 2026

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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