Process for the recovery of hydrocarbonaceous materials from tar sand
CA 1071557 A · Owner: Metallgesellschaft Aktiengesellschaft · Inventors: Weiss, Hans-Jurgen; Schmalfeld, Paul; Rammler, Roland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an improved process for the recovery of hydrocarbonaceous materials from tar sand. This process which comprises the steps of a) subjecting a part of the tar sand to hot water extraction, said extraction comprising the following steps: - mixing said part of the tar sand with hot water to form a hot water extraction mixture; - separating solids and bitumen from said extraction mixture; and - converting said bitumen into hydrocarbons; and b) subjecting the remaining part of the tar sand to dry distillation said distillation, comprising the following steps: - mixing said remaining part of the tar sand with a fine-grained heat carrier heated to about 600-800°C to …
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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
- Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
- 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.