Electrowinning metal in diaphragm cell with smooth cathode
CA 1234070 A · Owner: Societe Miniere Et Metallurgique De Penarroya · Inventors: Scheidt, Claude; Palvadeau, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a process for preparing a lead or copper metal by electrolysis in a cell having a cathode and an anode which are separated by a diaphragm which comprises, the steps of preparing an electrolyte containing a metal chloride to be prepared in at least one chloride of an alkali metal or alkaline-earth metal; circulating the electrolyte between the cathode and the anode parallel to the surface of the cathode, wherein the surfaces of the cathode are arranged in substantially a vertical direction and have a sufficiently low density of sites of nucleation so that the metallic particles which are formed on the sites keep their individuality in relation to the adjacent …
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 March 15, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 15, 2005.
- 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.