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Expired European patentEurope

Process for the production of steel from sponge iron and plant for carrying out the process

EP 0199714 B1 · Applicant: VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H.

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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 April 17, 1986 and granted October 4, 1989. A European patent lasts at most 20 years from filing, so its term ended April 17, 2006.
  • 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 October 17, 2011.
  • 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.
FiledApril 17, 1986
PublishedOctober 29, 1986
GrantedOctober 4, 1989
Term endedApril 17, 2006
Application numberEP 86890107
Classification (CPC)C21C7/00 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedApril 17, 1986PublishedOct 29, 1986Patent grantedOct 4, 1989Term endedApril 17, 2006

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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