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Expired European patentEurope

Method and apparatus for circular interpolation

EP 0047653 B1 · Applicant: FANUC LTD.

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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 September 7, 1981 and granted January 2, 1986. A European patent lasts at most 20 years from filing, so its term ended September 7, 2001.
  • 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 March 7, 2007.
  • 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.
FiledSeptember 7, 1981
PublishedMarch 17, 1982
GrantedJanuary 2, 1986
Term endedSeptember 7, 2001
Application numberEP 81304069
Classification (CPC)G05B19/41 +1 more

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

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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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