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Expired European patentEurope

Method for error handling in a converter circuit for wiring of three voltage levels

EP 1756926 B1 · Applicant: ABB Schweiz AG

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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 April 11, 2005 and granted November 7, 2007. A European patent lasts at most 20 years from filing, so its term ended April 11, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledApril 11, 2005
PublishedFebruary 28, 2007
GrantedNovember 7, 2007
Term endedApril 11, 2025
Application numberEP 05714745
Classification (CPC)H02H7/1225 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedApril 11, 2005PublishedFeb 28, 2007Patent grantedNov 7, 2007Term endedApril 11, 2025

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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