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Expired Canadian patentCanada

Method and apparatus for treating liquid/gas mixtures

CA 1303482 C · Owner: Norsk Hydro Asa · Inventors: Henriksen, Norolf

CIPO record

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Abstract From the Canadian patent

Method and means for treating of and mass transfer in liquid/gas mixtures, especially removal of oxygen from seawater to be injected into deep structures to increase the production of underground hydrocarbon resources. The oxygen removal is performed by means of an inert stripping gas which is purified and regenerated before it is recirculated. It is a main object of the present invention to provide a new and improved method to obtain maximum treatment efficiency and reduced residence time in the treatment zone. This is obtained by pumping the liquid and the gas in turbulent concurrent flow with the inert gas through one or more tubelike zones to one or more separation zones where gas and …

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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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 9, 1987
GrantedJune 16, 1992
Term endedJune 16, 2009
Patent numberCA 1303482 C
Classification (IPC)B01D53/14 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJan 9, 1987Patent grantedJune 16, 1992Term endedJune 16, 2009

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