Electrolytic recovery of zinc and manganese dioxide
CA 1066656 A · Owner: Sherritt Gordon Mines Limited · Inventors: Sefton, Verner B.; Bolton, Gerald L.; Masters, Ian M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for recovering zinc and manganese dioxide from material containing zinc and manganese compounds in-, cludes leaching the material to provide an aqueous solution containing manganese and zinc ions, electrolyzing the solution in one electrolytic cell with conditions inhibiting the formation of manganese dioxide and favouring the deposition of zinc and electrolyzing the solution in another electrolytic cell with conditions favouring the formation of manganese dioxide. Zinc is removed from the one electrolytic cell and manganese dioxide is removed from the other electrolytic cell.
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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 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 20, 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.