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Expired European patentEurope

Enhancement of drill bit seismics through selection of events monitored at the drill bit

EP 1093589 B1 · Applicant: Halliburton Energy Services, Inc.

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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 June 29, 1999 and granted September 29, 2004. A European patent lasts at most 20 years from filing, so its term ended June 29, 2019.
  • 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 December 29, 2024.
  • 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.
FiledJune 29, 1999
PublishedApril 25, 2001
GrantedSeptember 29, 2004
Term endedJune 29, 2019
Application numberEP 99932027
Classification (CPC)G01V1/42

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJune 29, 1999PublishedApril 25, 2001Patent grantedSep 29, 2004Term endedJune 29, 2019

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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