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Expired European patentEurope

Cutter head for a gear cutting machine

EP 0133320 B1 · Applicant: Werkzeugmaschinenfabrik Oerlikon-Bührle AG

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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 December 18, 1982 and granted July 15, 1987. A European patent lasts at most 20 years from filing, so its term ended December 18, 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 June 18, 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.
FiledDecember 18, 1982
PublishedFebruary 20, 1985
GrantedJuly 15, 1987
Term endedDecember 18, 2002
Application numberEP 84109004
Classification (CPC)B24B3/346 +1 more

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedDec 18, 1982PublishedFeb 20, 1985Patent grantedJuly 15, 1987Term endedDec 18, 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.