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Expired European patentEurope

Method and apparatus for measuring velocity of chromatographic pulses

EP 1494774 B1 · Applicant: Zoex Corporation

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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 19, 2002 and granted October 20, 2010. A European patent lasts at most 20 years from filing, so its term ended March 19, 2022.
  • 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 19, 2002
PublishedJanuary 12, 2005
GrantedOctober 20, 2010
Term endedMarch 19, 2022
Application numberEP 02725251
Classification (CPC)G01N30/465

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedMarch 19, 2002PublishedJan 12, 2005Patent grantedOct 20, 2010Term endedMarch 19, 2022

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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