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Expired European patentEurope

Circuit arrangement for the operation of a switching transistor

EP 1583237 B1 · Applicant: DEUTSCHE THOMSON-BRANDT GMBH

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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 March 31, 2004 and granted December 5, 2007. A European patent lasts at most 20 years from filing, so its term ended March 31, 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.
FiledMarch 31, 2004
PublishedOctober 5, 2005
GrantedDecember 5, 2007
Term endedMarch 31, 2024
Application numberEP 04007795
Classification (CPC)H03K17/163

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedMarch 31, 2004PublishedOct 5, 2005Patent grantedDec 5, 2007Term endedMarch 31, 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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