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Expired European patentEurope

Loop impedance measuring apparatus and method for subscriber loop interface circuits

EP 1079591 B1 · Applicant: Intersil Corporation

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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 August 22, 2000 and granted June 1, 2005. A European patent lasts at most 20 years from filing, so its term ended August 22, 2020.
  • 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 February 22, 2026.
  • 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.
FiledAugust 22, 2000
PublishedFebruary 28, 2001
GrantedJune 1, 2005
Term endedAugust 22, 2020
Application numberEP 00402336
Classification (CPC)G01R27/16

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedAug 22, 2000PublishedFeb 28, 2001Patent grantedJune 1, 2005Term endedAug 22, 2020

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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