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Expired European patentEurope

Metallurgical furnace vacuum slag removal

EP 0757666 B1 · Applicant: Sherwood, William Lyon

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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 April 25, 1994 and granted January 12, 2000. A European patent lasts at most 20 years from filing, so its term ended April 25, 2014.
  • 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 25, 2019.
  • 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 25, 1994
PublishedFebruary 12, 1997
GrantedJanuary 12, 2000
Term endedApril 25, 2014
Application numberEP 94912428
Classification (CPC)F27D9/00 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedApril 25, 1994PublishedFeb 12, 1997Patent grantedJan 12, 2000Term endedApril 25, 2014

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.