Method of making steel in liquid bath and apparatus for effecting same
CA 2091768 C · Owner: Zakrytoe Aktsionernoe Obschestvo "Mezhotraslevoe Juridicheskoe Agentsvo" Jurpromconsulting" (Zao Mjua "Jurpromconsulting") · Inventors: Lupeiko, Vitold Marianovich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The proposed method is characterized in that the liquid bath is constituted by the melt of a low-carbon steel and molten slag. Oxidation and reducing zones are created through which along a closed , path an the surface of the molten low-carbon steel, is circulated the molten slag, into which are blown powder slag materials which are melted with the heat of a fuel-oxygen torch immersed into the melt, The said method is carried out in a melting reservoir shaped as a closed annular chamber (1) provided with partitions (11) hermetically dividing the gas space above the molten slag into oxidation (6) and reducing (7) zones.
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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 September 17, 1991 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.