Patent Yard Sign in
Expired European patentEurope

Method for controlling the foaming of slag in three-phase electric arc furnaces

EP 0692544 B1 · Applicant: ISPAT, Hamburger Stahlwerke GmbH

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed July 5, 1995 and granted February 14, 2001. A European patent lasts at most 20 years from filing, so its term ended July 5, 2015.
  • 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 January 5, 2021.
  • 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.
FiledJuly 5, 1995
PublishedJanuary 17, 1996
GrantedFebruary 14, 2001
Term endedJuly 5, 2015
Application numberEP 95110454
Classification (CPC)C21C5/52

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedJuly 5, 1995PublishedJan 17, 1996Patent grantedFeb 14, 2001Term endedJuly 5, 2015

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.