Method of producing magnesium by the metallothermic reduction of magnesium oxide
CA 1332789 C · Owner: University Of Manchester Institute Of Science And Technology (The) · Inventors: Cameron, Andrew Miller
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Magnesium is produced by the metallothermic reduction of MgO in a molten slag bath comprised of MgO Al2O3 and CaO, together with oxide formed from the reducing metal. The composition of the slag is controlled during at least a first stage of the reduction so that it is wholly within the periclased region of its phase diagram and at least in the, surface region, has a substantially constant liquidus temperature. The surface region of the slag is maintained by direct heating (e.g. by a plasma) at or close to the liquidus temperature.
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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 November 1, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 1, 2011.
- 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.