Process for treatment of ores
CA 2001064 A1 · Owner: Lloyd, David J. · Inventors: Lloyd, David J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating mineral ores concentrates or, intermediates in slurry or solution form comprising subjecting the slurry or solution to a magnetic field either once or a plurality of times, while simultaneously maintaining the slurry or solution in turbulent flow. The magnetic flux treatment enhances the processes of oxidative leaching of metals, surface adsorption of metal ions and desorption of the said metal ions. The magnetic flux treatment may be applied at any one or all of the leaching adsorption or disorption stages.
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
- Filed October 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 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.