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Expired European patentEurope

Melt reduction equipment and operating method

EP 0823487 B1 · Applicant: NIPPON 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.

Why it's free to use

  • Filed January 24, 1997 and granted January 2, 2002. A European patent lasts at most 20 years from filing, so its term ended January 24, 2017.
  • 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 July 24, 2022.
  • 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.
FiledJanuary 24, 1997
PublishedFebruary 11, 1998
GrantedJanuary 2, 2002
Term endedJanuary 24, 2017
Application numberEP 97901259
Classification (CPC)C21B11/00 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedJan 24, 1997PublishedFeb 11, 1998Patent grantedJan 2, 2002Term endedJan 24, 2017

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