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Expired European patentEurope

Data reducing circuit with a differential pulse code modulator for video signals

EP 0242413 B1 · Applicant: Deutsche ITT Industries 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 April 19, 1986 and granted May 29, 1991. A European patent lasts at most 20 years from filing, so its term ended April 19, 2006.
  • 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 October 19, 2011.
  • 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.
FiledApril 19, 1986
PublishedOctober 28, 1987
GrantedMay 29, 1991
Term endedApril 19, 2006
Application numberEP 86105444
Classification (CPC)H04N19/593

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedApril 19, 1986PublishedOct 28, 1987Patent grantedMay 29, 1991Term endedApril 19, 2006

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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