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Expired European patentEurope

Force-balanced sonic flow emission control valve

EP 1069304 B1 · Applicant: SIEMENS CANADA LIMITED

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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 23, 1997 and granted September 11, 2002. A European patent lasts at most 20 years from filing, so its term ended May 23, 2017.
  • 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 23, 2022.
  • 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 23, 1997
PublishedJanuary 17, 2001
GrantedSeptember 11, 2002
Term endedMay 23, 2017
Application numberEP 00203572
Classification (CPC)F02M25/0836

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedMay 23, 1997PublishedJan 17, 2001Patent grantedSep 11, 2002Term endedMay 23, 2017

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.