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Expired European patentEurope

Marine seismic survey method and system

EP 1735641 B1 · Applicant: WesternGeco Seismic Holdings 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 March 17, 2004 and granted February 9, 2011. A European patent lasts at most 20 years from filing, so its term ended March 17, 2024.
  • 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 17, 2004
PublishedDecember 27, 2006
GrantedFebruary 9, 2011
Term endedMarch 17, 2024
Application numberEP 04821847
Classification (CPC)G01V1/3817

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedMarch 17, 2004PublishedDec 27, 2006Patent grantedFeb 9, 2011Term endedMarch 17, 2024

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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