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Expired European patentEurope

Device for testing digital circuits by means of adaptable clocking circuits included in the test

EP 0403436 B1 · Applicant: Zentrum Mikroelektronik Dresden GmbH

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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 June 11, 1990 and granted September 14, 1994. A European patent lasts at most 20 years from filing, so its term ended June 11, 2010.
  • 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 11, 2015.
  • 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 11, 1990
PublishedDecember 19, 1990
GrantedSeptember 14, 1994
Term endedJune 11, 2010
Application numberEP 90810424
Classification (CPC)G01R31/318541

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJune 11, 1990PublishedDec 19, 1990Patent grantedSep 14, 1994Term endedJune 11, 2010

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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