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Expired European patentEurope

Addressing environment storage for accessing a stack-oriented memory

EP 0205112 B1 · Applicant: UNISYS CORPORATION

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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 5, 1986 and granted July 24, 1991. A European patent lasts at most 20 years from filing, so its term ended June 5, 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 December 5, 2011.
  • 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 5, 1986
PublishedDecember 17, 1986
GrantedJuly 24, 1991
Term endedJune 5, 2006
Application numberEP 86107667
Classification (CPC)G06F9/4486

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedJune 5, 1986PublishedDec 17, 1986Patent grantedJuly 24, 1991Term endedJune 5, 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.