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Expired European patentEurope

Substrate bias control circuit and method

EP 0135504 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 December 15, 1983 and granted January 24, 1990. A European patent lasts at most 20 years from filing, so its term ended December 15, 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 June 15, 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.
FiledDecember 15, 1983
PublishedApril 3, 1985
GrantedJanuary 24, 1990
Term endedDecember 15, 2003
Application numberEP 84900369
Classification (CPC)G05F3/205

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedDec 15, 1983PublishedApril 3, 1985Patent grantedJan 24, 1990Term endedDec 15, 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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