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Expired European patentEurope

Precorrecting an audio carrier signal in a common amplifier for video- and audio carrier signals

EP 0660604 B1 · Applicant: HARRIS CORPORATION

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Overview

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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 December 22, 1994 and granted September 16, 1998. A European patent lasts at most 20 years from filing, so its term ended December 22, 2014.
  • 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 June 22, 2020.
  • 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.
FiledDecember 22, 1994
PublishedJune 28, 1995
GrantedSeptember 16, 1998
Term endedDecember 22, 2014
Application numberEP 94309715
Classification (CPC)H04N7/04 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedDec 22, 1994PublishedJune 28, 1995Patent grantedSep 16, 1998Term endedDec 22, 2014

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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