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Expired European patentEurope

Method of stirring molten metal and refractory cylinder for the purpose

EP 0099435 B1 · Applicant: KAWASAKI STEEL 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 November 3, 1982 and granted January 7, 1987. A European patent lasts at most 20 years from filing, so its term ended November 3, 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 May 3, 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.
FiledNovember 3, 1982
PublishedFebruary 1, 1984
GrantedJanuary 7, 1987
Term endedNovember 3, 2002
Application numberEP 82305849
Classification (CPC)B01F31/65 +2 more

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedNov 3, 1982PublishedFeb 1, 1984Patent grantedJan 7, 1987Term endedNov 3, 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

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