Paraffinic froth treatment techniques
CA 3036668 C · Owner: Fort Hills Energy L.P. · Inventors: Grant, Chris L.; Ringstrom, John Patrick; Sharpe, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Various techniques related to treating bitumen froth using a paraffinic solvent are described. Some methods can employ a high temperature counter-current paraffinic treatment process using a two-unit separation apparatus and a paraffinic solvent to have an overall carbon chain length of between C5 and C8. Methods can include feeding the diluted bitumen mixture into a first separation unit and producing a first diluted bitumen overflow and a first tailings underflow; adding paraffinic solvent to the first tailings underflow component; feeding the diluted tailings to a second separation unit and producing a second diluted bitumen overflow and a second tailings underflow that are; 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 January 8, 2004 and granted July 6, 2021. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2026.
- 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.