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Expired European patentEurope

Method and apparatus for encoding/decoding broadcast or recorded segments and monitoring audience exposure thereto

EP 0688487 B1 · Applicant: Arbitron Inc.

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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 November 16, 1993 and granted October 13, 2004. A European patent lasts at most 20 years from filing, so its term ended November 16, 2013.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by May 16, 2019.
  • 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.
FiledNovember 16, 1993
PublishedDecember 27, 1995
GrantedOctober 13, 2004
Term endedNovember 16, 2013
Application numberEP 94904801
Classification (CPC)H04H60/31 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedNov 16, 1993PublishedDec 27, 1995Patent grantedOct 13, 2004Term endedNov 16, 2013

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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