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Expired European patentEurope

Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal

EP 1706865 B1 · Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.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 January 17, 2005 and granted April 30, 2008. A European patent lasts at most 20 years from filing, so its term ended January 17, 2025.
  • 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.
FiledJanuary 17, 2005
PublishedOctober 4, 2006
GrantedApril 30, 2008
Term endedJanuary 17, 2025
Application numberEP 05700983
Classification (CPC)H04S3/02 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJan 17, 2005PublishedOct 4, 2006Patent grantedApril 30, 2008Term endedJan 17, 2025

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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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