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Expired European patentEurope

Circuit and method for driving a load, in particular a high-intensity discharge lamp, and a control unit for said circuit

EP 1590992 B1 · Applicant: Koninklijke Philips Electronics N.V.

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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 December 16, 2003 and granted November 5, 2008. A European patent lasts at most 20 years from filing, so its term ended December 16, 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.
FiledDecember 16, 2003
PublishedNovember 2, 2005
GrantedNovember 5, 2008
Term endedDecember 16, 2023
Application numberEP 03778673
Classification (CPC)H05B41/2888

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedDec 16, 2003PublishedNov 2, 2005Patent grantedNov 5, 2008Term endedDec 16, 2023

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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