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Expired European patentEurope

Apparatus and method for recording and reproducing of digital video and audio signals

EP 0542576 B1 · Applicant: SONY CORPORATION

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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 13, 1992 and granted July 16, 1997. A European patent lasts at most 20 years from filing, so its term ended November 13, 2012.
  • 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 13, 2018.
  • 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 13, 1992
PublishedMay 19, 1993
GrantedJuly 16, 1997
Term endedNovember 13, 2012
Application numberEP 92310403
Classification (CPC)H04N9/79 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedNov 13, 1992PublishedMay 19, 1993Patent grantedJuly 16, 1997Term endedNov 13, 2012

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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