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Expired European patentEurope

Method for formation evaluation while drilling

EP 0951613 B1 · Applicant: NUMAR CORPORATION

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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 December 29, 1997 and granted May 25, 2005. A European patent lasts at most 20 years from filing, so its term ended December 29, 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 June 29, 2023.
  • 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.
FiledDecember 29, 1997
PublishedOctober 27, 1999
GrantedMay 25, 2005
Term endedDecember 29, 2017
Application numberEP 97953480
Classification (CPC)G01N24/081 +1 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedDec 29, 1997PublishedOct 27, 1999Patent grantedMay 25, 2005Term endedDec 29, 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

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