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Expired European patentEurope

Device and process for objectively determining and quantitatively measuring the level of interest of test subjects for picture material and parts thereof

EP 0278024 B1 · Applicant: ASK Gesellschaft für Sozial- und Konsumforschung Dr. H. Driessen mbH

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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 February 9, 1987 and granted July 3, 1991. A European patent lasts at most 20 years from filing, so its term ended February 9, 2007.
  • 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 August 9, 2012.
  • 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.
FiledFebruary 9, 1987
PublishedAugust 17, 1988
GrantedJuly 3, 1991
Term endedFebruary 9, 2007
Application numberEP 87101762
Classification (CPC)G09B19/00

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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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