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Expired European patentEurope

A BICMOS logic circuit with self-boosting immunity and a method therefor

EP 0469834 B1 · Applicant: MOTOROLA, INC.

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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 29, 1991 and granted January 15, 1997. A European patent lasts at most 20 years from filing, so its term ended July 29, 2011.
  • 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 29, 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.
FiledJuly 29, 1991
PublishedFebruary 5, 1992
GrantedJanuary 15, 1997
Term endedJuly 29, 2011
Application numberEP 91306941
Classification (CPC)G11C7/12 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedJuly 29, 1991PublishedFeb 5, 1992Patent grantedJan 15, 1997Term endedJuly 29, 2011

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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