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Expired European patentEurope

Process of producing pig iron from iron ore concentrate

EP 0122239 B1 · Applicant: IPS INTERPROJECT SERVICE AB

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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 February 24, 1984 and granted May 3, 1989. A European patent lasts at most 20 years from filing, so its term ended February 24, 2004.
  • 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 24, 2009.
  • 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 24, 1984
PublishedOctober 17, 1984
GrantedMay 3, 1989
Term endedFebruary 24, 2004
Application numberEP 84850064
Classification (CPC)C21B13/143

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedFeb 24, 1984PublishedOct 17, 1984Patent grantedMay 3, 1989Term endedFeb 24, 2004

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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