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Expired European patentEurope

Synchronous clock producing circuit for a digital signal multiplex apparatus

EP 0099101 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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 July 11, 1983 and granted October 28, 1987. A European patent lasts at most 20 years from filing, so its term ended July 11, 2003.
  • 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 January 11, 2009.
  • 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.
FiledJuly 11, 1983
PublishedJanuary 25, 1984
GrantedOctober 28, 1987
Term endedJuly 11, 2003
Application numberEP 83106798
Classification (CPC)H04J3/047

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJuly 11, 1983PublishedJan 25, 1984Patent grantedOct 28, 1987Term endedJuly 11, 2003

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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