Process for recovering particles suspended in an aqueous slime
CA 2368876 A1 · Owner: Ateba Mines Inc. · Inventors: Berardi, Roberto; Krofchak, David; Howe, David 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 mineral particles metal particles or small precious , stones from an aqueous slime associated with an ore body or mineral deposit or processing thereof, said aqueous slime containing mineral particles metal , particles or small precious stones in suspension with slime particles. The process includes adding a sufficient amount of deflocculating agent to the aqueous slime to cause deflocculation of the slime particles and produce a deflocculated suspension containing the mineral particles metal particles or , small precious stones. The deflocculated suspension is allowed to settle and , the settled material containing the mineral particles metal particles or , …
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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
- Filed April 9, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2021.
- 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
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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.