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Expired European patentEurope

Steel containing ultrafine oxide inclusions dispersed therein

EP 0666331 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 February 16, 1994 and granted May 19, 1999. A European patent lasts at most 20 years from filing, so its term ended February 16, 2014.
  • 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 August 16, 2019.
  • 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.
FiledFebruary 16, 1994
PublishedAugust 9, 1995
GrantedMay 19, 1999
Term endedFebruary 16, 2014
Application numberEP 94907053
Classification (CPC)C22C38/60 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedFeb 16, 1994PublishedAug 9, 1995Patent grantedMay 19, 1999Term endedFeb 16, 2014

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