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Expired Canadian patentCanada

Static method of controlling the refining reactions of pig iron for steel making purposes in an oxygen top blowing converter

CA 1045823 A · Owner: Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktienges Ellschaft · Inventors: Pinger, Helmut; Pirklbauer, Wilfried

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Abstract From the Canadian patent

A static method of controlling the refining reactions of pig iron used for steel making purposes in an oxygen top blowing converter and in which a slag composition is achieved which at the end of the blowing, procedure, is substantially in chemical equilibrium with the molten metal (hereinafter referred to as the bath ) the composition of the bath approach-, ing as closely as possible the desired composition of the steel especially, a steel having maximum limiting amounts of manganese and phosphorus. The method of the invention is particularly suitable for the production of a steel of a quality such that a substantial elimination of the elements accompanying the pig iron is achieved. Such …

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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 January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 9, 1979
Term endedJanuary 9, 1996
Patent numberCA 1045823 A
Classification (IPC)C21C5/32 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 9, 1979Term endedJan 9, 1996

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