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Expired European patentEurope

Data processing machine suitable for high-speed processing

EP 0172522 B1 · Applicant: NEC CORPORATION

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 22, 1982 and granted January 2, 1991. A European patent lasts at most 20 years from filing, so its term ended October 22, 2002.
  • 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 22, 2008.
  • 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 22, 1982
PublishedFebruary 26, 1986
GrantedJanuary 2, 1991
Term endedOctober 22, 2002
Application numberEP 85110112
Classification (CPC)G06F9/4494

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedOct 22, 1982PublishedFeb 26, 1986Patent grantedJan 2, 1991Term endedOct 22, 2002

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.