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Expired European patentEurope

Electroacoustic method and device for stimulation of mass transfer processes for enhanced well recovery

EP 1825101 B1 · Applicant: Klamath Falls, 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 November 12, 2004 and granted January 11, 2012. A European patent lasts at most 20 years from filing, so its term ended November 12, 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.
FiledNovember 12, 2004
PublishedAugust 29, 2007
GrantedJanuary 11, 2012
Term endedNovember 12, 2024
Application numberEP 04810770
Classification (CPC)E21B28/00 +1 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedNov 12, 2004PublishedAug 29, 2007Patent grantedJan 11, 2012Term endedNov 12, 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

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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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