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Expired European patentEurope

Method for measuring formation properties with a formation tester

EP 1703076 B1 · Applicant: SERVICES PETROLIERS SCHLUMBERGER

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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 28, 2005 and granted March 25, 2009. A European patent lasts at most 20 years from filing, so its term ended February 28, 2025.
  • 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.
FiledFebruary 28, 2005
PublishedSeptember 20, 2006
GrantedMarch 25, 2009
Term endedFebruary 28, 2025
Application numberEP 05290452
Classification (CPC)E21B49/008

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedFeb 28, 2005PublishedSep 20, 2006Patent grantedMarch 25, 2009Term endedFeb 28, 2025

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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