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Expired European patentEurope

Circuit for measuring the dynamic characteristics of a housing for a high-speed integrated circuit, and method of measuring these dynamic characteristics

EP 0270422 B1 · Applicant: THOMSON HYBRIDES ET MICROONDES

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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 November 10, 1987 and granted January 15, 1992. A European patent lasts at most 20 years from filing, so its term ended November 10, 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 May 10, 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.
FiledNovember 10, 1987
PublishedJune 8, 1988
GrantedJanuary 15, 1992
Term endedNovember 10, 2007
Application numberEP 87402530
Classification (CPC)G01R27/28 +1 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedNov 10, 1987PublishedJune 8, 1988Patent grantedJan 15, 1992Term endedNov 10, 2007

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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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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