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Expired European patentEurope

Serially-accessed type memory device

EP 0254886 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 June 29, 1987 and granted June 16, 1993. A European patent lasts at most 20 years from filing, so its term ended June 29, 2007.
  • 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 December 29, 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.
FiledJune 29, 1987
PublishedFebruary 3, 1988
GrantedJune 16, 1993
Term endedJune 29, 2007
Application numberEP 87109345
Classification (CPC)G11C7/103

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJune 29, 1987PublishedFeb 3, 1988Patent grantedJune 16, 1993Term endedJune 29, 2007

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.