Process for recovery of bitumen from waste water of tar sands processing
CA 1238597 A · Owner: Suncor, Inc. · Inventors: Seitzer, Walter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the recovery of diluent and bitumen from the aqueous phase separated from an electrostatic treater used to separate bitumen from tar sands tailings to which a diluent such as naphtha has been added by adding a clay deflocculant to such diluted tailings and allowing separation to a top organic layer and a bottom aqueous layer essentially free of organic material, and separating the layers to recover the organic diluent and the bitumen.
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
- Granted June 28, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 28, 2005.
- 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.