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Expired European patentEurope

Method of regulated resonance dc-dc voltage conversion

EP 1504517 B1 · Applicant: INTREPRINDEREA Mixta Moldo-Rusa "Elcon" 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 12, 2003 and granted November 5, 2008. A European patent lasts at most 20 years from filing, so its term ended May 12, 2023.
  • 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 12, 2003
PublishedFebruary 9, 2005
GrantedNovember 5, 2008
Term endedMay 12, 2023
Application numberEP 03721142
Classification (CPC)H02M3/01 +1 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedMay 12, 2003PublishedFeb 9, 2005Patent grantedNov 5, 2008Term endedMay 12, 2023

Sources & verification

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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

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