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Expired European patentEurope

Data processing system wherein a simple peripheral control arrangement enables a CPU to access an enlarged address area

EP 0366458 B1 · Applicant: NEC CORPORATION

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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 26, 1989 and granted June 28, 1995. A European patent lasts at most 20 years from filing, so its term ended October 26, 2009.
  • 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 26, 2015.
  • 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 26, 1989
PublishedMay 2, 1990
GrantedJune 28, 1995
Term endedOctober 26, 2009
Application numberEP 89311039
Classification (CPC)G06F12/0623

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedOct 26, 1989PublishedMay 2, 1990Patent grantedJune 28, 1995Term endedOct 26, 2009

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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