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Expired European patentEurope

Process for the reduction of molten metal ores

EP 0108232 B1 · Applicant: Thyssen Edelstahlwerke AG

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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 September 23, 1983 and granted November 15, 1989. A European patent lasts at most 20 years from filing, so its term ended September 23, 2003.
  • 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 March 23, 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.
FiledSeptember 23, 1983
PublishedMay 16, 1984
GrantedNovember 15, 1989
Term endedSeptember 23, 2003
Application numberEP 83109472
Classification (CPC)C22B5/12 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedSep 23, 1983PublishedMay 16, 1984Patent grantedNov 15, 1989Term endedSep 23, 2003

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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