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Expired European patentEurope

Method of controlling a numerically controlled machine tool

EP 0126388 B1 · Applicant: HITACHI, LTD.

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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 May 10, 1984 and granted November 8, 1989. A European patent lasts at most 20 years from filing, so its term ended May 10, 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 November 10, 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.
FiledMay 10, 1984
PublishedNovember 28, 1984
GrantedNovember 8, 1989
Term endedMay 10, 2004
Application numberEP 84105288
Classification (CPC)G05B19/232

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMay 10, 1984PublishedNov 28, 1984Patent grantedNov 8, 1989Term endedMay 10, 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

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