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Expired European patentEurope

Method for restoring the direct current voltage value in video signals, and arrangement therefor

EP 0341339 B1 · Applicant: ANT Nachrichtentechnik 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 June 13, 1988 and granted October 14, 1992. A European patent lasts at most 20 years from filing, so its term ended June 13, 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 December 13, 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.
FiledJune 13, 1988
PublishedNovember 15, 1989
GrantedOctober 14, 1992
Term endedJune 13, 2008
Application numberEP 88109368
Classification (CPC)H04N5/18

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJune 13, 1988PublishedNov 15, 1989Patent grantedOct 14, 1992Term endedJune 13, 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

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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