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Expired European patentEurope

Circuitry for the compression of digital data words by means of a scale factor

EP 0281061 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 1, 1988 and granted January 11, 1995. A European patent lasts at most 20 years from filing, so its term ended March 1, 2008.
  • 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 September 1, 2013.
  • 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 1, 1988
PublishedSeptember 7, 1988
GrantedJanuary 11, 1995
Term endedMarch 1, 2008
Application numberEP 88103034
Classification (CPC)H03M7/30

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedMarch 1, 1988PublishedSep 7, 1988Patent grantedJan 11, 1995Term endedMarch 1, 2008

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

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