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Expired European patentEurope

Method for the location of a high-resistance earth fault in a power distribution system on the basis of current measurements

EP 1018027 B1 · Applicant: ABB Transmit Oy

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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 26, 1998 and granted May 7, 2008. A European patent lasts at most 20 years from filing, so its term ended August 26, 2018.
  • 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 26, 2024.
  • 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 26, 1998
PublishedJuly 12, 2000
GrantedMay 7, 2008
Term endedAugust 26, 2018
Application numberEP 98941445
Classification (CPC)H02H3/385 +1 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedAug 26, 1998PublishedJuly 12, 2000Patent grantedMay 7, 2008Term endedAug 26, 2018

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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