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Expired European patentEurope

Set-associative content addressable memory with a protection facility

EP 0244532 B1 · Applicant: SILICON GRAPHICS, 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 October 17, 1986 and granted December 29, 1993. A European patent lasts at most 20 years from filing, so its term ended October 17, 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 April 17, 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.
FiledOctober 17, 1986
PublishedNovember 11, 1987
GrantedDecember 29, 1993
Term endedOctober 17, 2006
Application numberEP 86308095
Classification (CPC)G06F11/004 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedOct 17, 1986PublishedNov 11, 1987Patent grantedDec 29, 1993Term endedOct 17, 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.