Copper extraction by arc heater
CA 1075473 A · Owner: Westinghouse Electric Corporation · Inventors: Camp, Floyd E.; Hirayama, Chikara
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A single step process for converting copper ore to a metal characterized by the step of injecting powdered copper sulfide (Cu2S) into an arc heated gas containing oxygen in an amount sufficient to yield elemental copper and sulfur dioxide (SO2).
Read the whole patent
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 April 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1997.
- 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.