Indirect temperature control of froth separation unit in paraffinic froth treatment
CA 2799400 C · Owner: Fort Hills Energy L.P. · Inventors: Grant, Chris L.; Hindle, W. Scott; Ringstrom, John Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Processes and apparatus for the treatment of product streams from mineral processing operations including the treatment of tailings which result from oil sand processing operations. The processes and apparatus relate to paraffinic froth treatment including adding paraffin to froth; separating into diluted bitumen and diluted tailings; separating the diluted tailings into solvent and tailings; and recycling a portion of the tailings to combine with the diluted tailings prior to introduction into the separator to regulate the temperature of the solvent recovery separator.
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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 April 15, 2014. 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
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.