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Expired European patentEurope

Method and apparatus for variable playback speed of multimedia data interchange within a data processing system

EP 0508928 B1 · Applicant: International Business Machines 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 February 26, 1992 and granted October 31, 2001. A European patent lasts at most 20 years from filing, so its term ended February 26, 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 August 26, 2017.
  • 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.
FiledFebruary 26, 1992
PublishedOctober 14, 1992
GrantedOctober 31, 2001
Term endedFebruary 26, 2012
Application numberEP 92480028
Classification (CPC)H04L9/40

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedFeb 26, 1992PublishedOct 14, 1992Patent grantedOct 31, 2001Term endedFeb 26, 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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