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Expired Canadian patentCanada

Prefabricated multiple density blast furnace runner

CA 1184737 A · Owner: Labate, Michael D. · Inventors: Labate, Micheal D.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A hot metal runner unit comprises a trough-like body member formed of multi-layered mass coalesced by physical force not under thermal influence with each of said multi-layers being of a different density and having a known predetermined lifetime when subjected to molten metal flowing therethrough. -2-

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted April 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1982
GrantedApril 2, 1985
Term endedApril 2, 2002
Patent numberCA 1184737 A
Classification (IPC)F27D3/14

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedFeb 24, 1982Patent grantedApril 2, 1985Term endedApril 2, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.