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Expired Canadian patentCanada

Separation of viscous hydrocarbons and minerals particles from aqueous mixtures by oleophilic adhesion

CA 1288058 C · Owner: Kruyer, Jan · Inventors: Kruyer, Jan

CIPO record

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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 method and apparatus for separating an oil phase from an aqueous phase by means of a rotating drum apparatus containing one or more compartments, each being partially filled with oleophilic free bodies. When containing two or more compartments they are separated by an apertured baffle. The interior surfaces of the drum are oleophilic and the portion of the drum sidewall where the mixture is removed is apertured. Due to the oleophilic free bodies and interior oleophilic surfaces the aqueous phase, velocity through the drum is faster than the oil phase which adheres to the oleophilic surfaces causing an in situ build up and agglomeration of oil phase in the drum. The mixture exiting the …

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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 August 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 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.
FiledApril 10, 1986
GrantedAugust 27, 1991
Term endedAugust 27, 2008
Patent numberCA 1288058 C
Classification (IPC)B01D36/04 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedApril 10, 1986Patent grantedAug 27, 1991Term endedAug 27, 2008

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