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Expired Canadian patentCanada

Hydrocarbon recovery from carbon dioxide-rich gases

CA 1278744 C · Owner: Gottier, Gerry N. · Inventors: Gottier, Gerry N.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A process is set forth for the separation of carbon dioxide from propane and higher alkanes using a carbon dioxide-loaded lean oil solvent and higher solvent flows and heat utilizations rather than mechanical energy utilization, A high pressure carbon dioxide product is produced making the invention valuable in carbon dioxide miscible flood enhanced petroleum recovery operations.

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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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 6, 1987
GrantedJanuary 8, 1991
Term endedJanuary 8, 2008
Patent numberCA 1278744 C
Classification (IPC)B01D53/14 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJuly 6, 1987Patent grantedJan 8, 1991Term endedJan 8, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.