Method for separating bitumen from an oil sand froth
CA 2521248 C · Owner: Marathon Oil Sands L.P. · Inventors: Long, Yicheng; Colenbrander, Gerhardus Willem; Hollander, Elco Dick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for separating an oil sand froth comprises: - mixing the oil sand froth with a paraffinic solvent; - inducing the fluid mixture to be separated by gravity separation in the separator into a bitumen enriched water and solids depleted, upper fluid fraction (C x H y) and a bitumen depleted water and solids enriched, lower fluid fraction (H2O) ; - inducing the bitumen enriched water depleted, upper fluid fraction to flow into an upper fluid outlet of the separator and inducing the water enriched bitumen depleted, lower fluid fraction to flow into to a lower fluid outlet of the separator; and - agitating the fluid mixture with mixing means such that the bitumen depleted water and solids …
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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 September 26, 2005 and granted January 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2025.
- 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.