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Expired European patentEurope

Method for producing grain-oriented silicon steel sheet

EP 0823488 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 August 7, 1997 and granted November 14, 2001. A European patent lasts at most 20 years from filing, so its term ended August 7, 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 February 7, 2023.
  • 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.
FiledAugust 7, 1997
PublishedFebruary 11, 1998
GrantedNovember 14, 2001
Term endedAugust 7, 2017
Application numberEP 97113672
Classification (CPC)C21D8/1261

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedAug 7, 1997PublishedFeb 11, 1998Patent grantedNov 14, 2001Term endedAug 7, 2017

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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