Paraffinic froth treatment with multiple or sub-atmospheric solvent recovery units
CA 2799354 C · Owner: Fort Hills Energy L.P. · Inventors: Ringstrom, John Patrick; Sharpe, John; Bartlett, Douglas Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high temperature paraffinic treatment process can include contacting bitumen froth with paraffinic solvent, separating the diluted froth that , includes , asphaltenes, recovering the solvent from a diluted bitumen component using a solvent recovery apparatus, recovering solvent from a diluted tailings component, and re-using the recovered solvent. The solvent recovery can employ a plurality of , vessels arranged in series and/or operated at sub-atmospheric pressure with , an , associated condenser.
Read the whole patent
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 March 31, 2015. 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.