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Expired European patentEurope

Method and circuit for active power factor correction

EP 1761832 B1 · Applicant: STMicroelectronics S.r.l.

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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 May 18, 2004 and granted November 19, 2008. A European patent lasts at most 20 years from filing, so its term ended May 18, 2024.
  • 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.
FiledMay 18, 2004
PublishedMarch 14, 2007
GrantedNovember 19, 2008
Term endedMay 18, 2024
Application numberEP 04745148
Classification (CPC)H02M1/4225 +1 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedMay 18, 2004PublishedMarch 14, 2007Patent grantedNov 19, 2008Term endedMay 18, 2024

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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