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Expired European patentEurope

Well fluid sampling tool and well fluid sampling method

EP 0515495 B1 · Applicant: OILPHASE SAMPLING SERVICES LIMITED

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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 February 14, 1991 and granted August 26, 1998. A European patent lasts at most 20 years from filing, so its term ended February 14, 2011.
  • 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 August 14, 2016.
  • 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.
FiledFebruary 14, 1991
PublishedDecember 2, 1992
GrantedAugust 26, 1998
Term endedFebruary 14, 2011
Application numberEP 91904524
Classification (CPC)E21B49/082

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedFeb 14, 1991PublishedDec 2, 1992Patent grantedAug 26, 1998Term endedFeb 14, 2011

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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