Process and apparatus for recovering an oil-enriched product from an oil-bearing material
CA 2332207 E · Owner: Tsc Company Ltd. · Inventors: Kaethler, Harry; Lavender, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Processes and apparatuses for recovering an oil-enriched product from an oil-bearing material such as tar sand ore are disclosed. One such process includes mixing the oil-bearing material with solvent to form a slurry in a slurry feed tank and pumping the slurry into a hydrocyclone to separate it into an overflow portion and an underflow portion the overflow portion containing the oil-enriched product. The process further includes vacuum filtering the underflow portion to remove solvent therefrom and produce substantially dewatered tailings recycling the solvent removed from the underflow portion back into an earlier stage of the process and adding fresh solvent into the process.
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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 January 24, 2001 and granted February 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2023.
- 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.