Method of spray smelting copper
CA 1051205 A · Owner: National Research Institute For Metals · Inventors: Kametani, Hiroshi; Yamauchi, Chikabumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the method of smelting copper by melting a starting material of the group consisting of copper ore and roasted copper ore in a furnace along with a flux, separating from the melt a material of the group consisting of a matte and white metal which abound in cuprous sulfide and thereafter smelt-, ing the separated matte or white metal with a member selected from the group consisting of oxygen and an oxygen-containing gas to convert same into blister copper, the improvement which comprises causing said matte or white metal to freely flow downwardly in a molten state and blowing a member selected from the group consisting of air, oxygen-enriched air and oxygen against the downwardly flowing …
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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 March 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 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.
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.