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Expired European patentEurope

Sub-sampling transmission system for improving transmission picture quality in time-varying picture region of wide-band color picture signal

EP 0546193 B1 · Applicant: NIPPON HOSO KYOKAI

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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 June 22, 1992 and granted March 24, 1999. A European patent lasts at most 20 years from filing, so its term ended June 22, 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 December 22, 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.
FiledJune 22, 1992
PublishedJune 16, 1993
GrantedMarch 24, 1999
Term endedJune 22, 2012
Application numberEP 92913001
Classification (CPC)H04N7/122 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJune 22, 1992PublishedJune 16, 1993Patent grantedMarch 24, 1999Term endedJune 22, 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

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