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Expired European patentEurope

Single shared turn-off circuit for a thyristor converter

EP 0771064 B1 · Applicant: ASEA BROWN BOVERI AG

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Overview

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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 September 30, 1996 and granted November 15, 2000. A European patent lasts at most 20 years from filing, so its term ended September 30, 2016.
  • 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 30, 2022.
  • 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 30, 1996
PublishedMay 2, 1997
GrantedNovember 15, 2000
Term endedSeptember 30, 2016
Application numberEP 96810647
Classification (CPC)H02M7/155

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedSep 30, 1996PublishedMay 2, 1997Patent grantedNov 15, 2000Term endedSep 30, 2016

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.