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Expired European patentEurope

Method of manufacturing ironzinc alloy plated steel sheet having two plating layers and excellent in electropaintability and press-formability

EP 0488409 B1 · Applicant: NKK 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 29, 1991 and granted February 16, 1994. A European patent lasts at most 20 years from filing, so its term ended November 29, 2011.
  • 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 29, 2017.
  • 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 29, 1991
PublishedJune 3, 1992
GrantedFebruary 16, 1994
Term endedNovember 29, 2011
Application numberEP 91120597
Classification (CPC)C23C18/00 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedNov 29, 1991PublishedJune 3, 1992Patent grantedFeb 16, 1994Term endedNov 29, 2011

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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