Patent Yard Sign in
European application, no grantEurope

Method and apparatus for continuously determining the level of the charge in a blast furnace

EP 0014626 A1 · Applicant: INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France

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 January 25, 1980 and never granted as a European patent. Had it been granted, its 20-year term would have ended January 25, 2000.
  • 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 July 25, 2005.
  • 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.
FiledJanuary 25, 1980
PublishedAugust 20, 1980
GrantedNever granted
Term endedJanuary 25, 2000
Application numberEP 80400120
Classification (CPC)C21B7/24 +1 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJan 25, 1980PublishedAug 20, 1980Term endedJan 25, 2000

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.