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Expired European patentEurope

Electronic ballast for operating a lamp with iterative voltage pulses

EP 1507446 B1 · Applicant: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH

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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 July 19, 2004 and granted September 27, 2006. A European patent lasts at most 20 years from filing, so its term ended July 19, 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.
FiledJuly 19, 2004
PublishedFebruary 16, 2005
GrantedSeptember 27, 2006
Term endedJuly 19, 2024
Application numberEP 04017003
Classification (CPC)H05B41/2806

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJuly 19, 2004PublishedFeb 16, 2005Patent grantedSep 27, 2006Term endedJuly 19, 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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