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Expired European patentEurope

Data processing tape drive system

EP 0129654 B1 · Applicant: International Business Machines 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 April 12, 1984 and granted June 13, 1990. A European patent lasts at most 20 years from filing, so its term ended April 12, 2004.
  • 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 October 12, 2009.
  • 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.
FiledApril 12, 1984
PublishedJanuary 2, 1985
GrantedJune 13, 1990
Term endedApril 12, 2004
Application numberEP 84104077
Classification (CPC)G11B15/67

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedApril 12, 1984PublishedJan 2, 1985Patent grantedJune 13, 1990Term endedApril 12, 2004

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.