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Expired European patentEurope

Process for heating molten steel contained in a ladle

EP 0334915 B1 · Applicant: BETHLEHEM STEEL 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 May 24, 1988 and granted October 20, 1993. A European patent lasts at most 20 years from filing, so its term ended May 24, 2008.
  • 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 November 24, 2013.
  • 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.
FiledMay 24, 1988
PublishedOctober 4, 1989
GrantedOctober 20, 1993
Term endedMay 24, 2008
Application numberEP 88908007
Classification (CPC)C21C7/0056 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedMay 24, 1988PublishedOct 4, 1989Patent grantedOct 20, 1993Term endedMay 24, 2008

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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