Processing of oil sand ore which contains degraded bitumen
CA 2385311 C · Owner: Suncor Energy Inc. · Inventors: Munoz, Vicente; Bjornson, Brad; Cox, Doug
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of improving a warm water or hot water extraction process for extracting , bitumen from ore. The method includes identifying bitumen in the ore as degraded , or undegraded, and supplying a greater amount of alkaline material to the extraction , process if the bitumen is identified as degraded than an amount of alkaline material , that is supplied to the extraction process if the bitumen is identified as undegraded.
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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 May 2, 2002 and granted February 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2024.
- 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.