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Expired European patentEurope

Method for protecting austenitic stainless steel-made equipment from occurrence of stress-corrosion cracking

EP 0242015 B1 · Applicant: NIPPON MINING COMPANY LIMITED

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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 January 19, 1987 and granted April 4, 1990. A European patent lasts at most 20 years from filing, so its term ended January 19, 2007.
  • 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 19, 2012.
  • 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 19, 1987
PublishedOctober 21, 1987
GrantedApril 4, 1990
Term endedJanuary 19, 2007
Application numberEP 87300407
Classification (CPC)C10G49/00

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJan 19, 1987PublishedOct 21, 1987Patent grantedApril 4, 1990Term endedJan 19, 2007

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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