Patent Yard Sign in
Expired European patentEurope

Method for computational determination of ground fault distance in an electrical power distribution network having a ring configuration

EP 1089081 B1 · Applicant: ABB Substation Automation Oy

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed September 22, 2000 and granted March 16, 2005. A European patent lasts at most 20 years from filing, so its term ended September 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 March 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.
FiledSeptember 22, 2000
PublishedApril 4, 2001
GrantedMarch 16, 2005
Term endedSeptember 22, 2020
Application numberEP 00660163
Classification (CPC)G01R31/086

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedSep 22, 2000PublishedApril 4, 2001Patent grantedMarch 16, 2005Term endedSep 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.