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Expired European patentEurope

Method of gas-liquid two-phase flow chromatographic analysis

EP 1865314 B1 · Applicant: TOYO SEIKAN KAISHA, LTD.

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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 31, 2006 and granted November 9, 2011. A European patent lasts at most 20 years from filing, so its term ended March 31, 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 31, 2006
PublishedDecember 12, 2007
GrantedNovember 9, 2011
Term endedMarch 31, 2026
Application numberEP 06731361
Classification (CPC)G01N27/623 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedMarch 31, 2006PublishedDec 12, 2007Patent grantedNov 9, 2011Term endedMarch 31, 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

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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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