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Expired European patentEurope

Method of eliminating the effect of electromagnetic coupling between a pair of receivers

EP 0665447 B1 · Applicant: BAKER HUGHES INCORPORATED

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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 January 26, 1995 and granted April 10, 2002. A European patent lasts at most 20 years from filing, so its term ended January 26, 2015.
  • 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 July 26, 2020.
  • 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.
FiledJanuary 26, 1995
PublishedAugust 2, 1995
GrantedApril 10, 2002
Term endedJanuary 26, 2015
Application numberEP 95300467
Classification (CPC)G01V3/28

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedJan 26, 1995PublishedAug 2, 1995Patent grantedApril 10, 2002Term endedJan 26, 2015

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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