Process for recovering heavy minerals from oil sand tailings
CA 2548006 C · Owner: Titanium Corporation Inc. · Inventors: Dawson, Neil P.; Chachula, Francis C.; Erasmus, Daniel E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for recovering heavy minerals from aqueous oil sand tailings the oil sand tailings having heavy minerals other coarse solids such as silica, fines residual bitumen and water, including desliming the oil sand tailings in a desliming means by removing a portion of free fines and residual bitumen from the oil sand tailings; attritioning the oil sand tailings in an attritioner to remove adhered fines and residual bitumen from the heavy minerals and other coarse solids; and subjecting the deslimed and attritioned tailings to separation in a separation means to separate the heavy minerals from the other coarse solids present in the deslimed and attritioned tailings and …
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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 May 25, 2006 and granted April 22, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.