Tar sands process
CA 1097242 A · Owner: Phillips Petroleum Company · Inventors: Gifford, Phillip H. Ii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
25,601, TAR SANDS PROCESS, Abstract of the Disclosure Raw tar sand is treated in a fluidized bed reactor means wherein the raw tar sands are fed into an area below the top of the bed. the bitumen is converted in the process in a reducing atmosphere including steam to produce hot coked sand and hot off-gases. Off-gases from the reactor means pass through a heat exchanger means to preheat fresh (raw) tar sand. The cooled off-gases are separated to recover raw oil while at least a portion, of the separated gases are recycled to the reactor means to retrieve and, retsin heat in the system by passing upwardly through hot spent sand. Steam and oxygen are injected into the lower area of the fluid …
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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 March 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 1998.
- 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.