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Expired European patentEurope

High-speed and low-power consumption decoder unit implemented by emitter-coupled logic circuit

EP 0516331 B1 · Applicant: NEC CORPORATION

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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 May 20, 1992 and granted August 13, 1997. A European patent lasts at most 20 years from filing, so its term ended May 20, 2012.
  • 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 November 20, 2017.
  • 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.
FiledMay 20, 1992
PublishedDecember 2, 1992
GrantedAugust 13, 1997
Term endedMay 20, 2012
Application numberEP 92304565
Classification (CPC)H03K19/0136 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedMay 20, 1992PublishedDec 2, 1992Patent grantedAug 13, 1997Term endedMay 20, 2012

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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