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Expired Canadian patentCanada

Combined ironmaking and steelmaking plant

CA 2467310 C · Owner: Technological Resources Pty Limited · Inventors: Macauley, Derek

CIPO record

Overview

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

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Abstract From the Canadian patent

A combined ironmaking and steelmaking plant is disclosed. The plant includes a direct smelting ironmaking plant that includes an ironmaking vessel and a steelmaking plant for producing molten steel from molten iron from the iron making plant. The steelmaking plant includes a steelmaking vessel such as a BOF. The plant also includes a plurality of ladles for molten iron and a transfer means for transferring the ladles between (i) an operative position at the ironmaking vessel for receiving molten iron from the ironmaking vessel and (ii) an operative position at the steelmaking vessel for discharging molten iron directly into the steelmaking vessel. The transfer means links together the …

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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

  • Filed May 14, 2004 and granted July 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 14, 2004
GrantedJuly 31, 2012
Term endedMay 14, 2024
Patent numberCA 2467310 C
Classification (IPC)C21C5/28 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 14, 2004Patent grantedJuly 31, 2012Term endedMay 14, 2024

Sources & verification

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