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Expired European patentEurope

Memory access control circuit

EP 0226950 B1 · Applicant: KABUSHIKI KAISHA TOSHIBA

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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 10, 1986 and granted February 17, 1993. A European patent lasts at most 20 years from filing, so its term ended December 10, 2006.
  • 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 10, 2012.
  • 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 10, 1986
PublishedJuly 1, 1987
GrantedFebruary 17, 1993
Term endedDecember 10, 2006
Application numberEP 86117189
Classification (CPC)G06F12/0215

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedDec 10, 1986PublishedJuly 1, 1987Patent grantedFeb 17, 1993Term endedDec 10, 2006

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.