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Expired European patentEurope

Keying signal generator for television inlay effect and special effects control device comprising such a generator

EP 0024973 B1 · Applicant: THOMSON-CSF

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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 August 8, 1980 and granted June 22, 1983. A European patent lasts at most 20 years from filing, so its term ended August 8, 2000.
  • 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 February 8, 2006.
  • 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.
FiledAugust 8, 1980
PublishedMarch 11, 1981
GrantedJune 22, 1983
Term endedAugust 8, 2000
Application numberEP 80401168
Classification (CPC)H04N9/75

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedAug 8, 1980PublishedMarch 11, 1981Patent grantedJune 22, 1983Term endedAug 8, 2000

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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