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Expired Canadian patentCanada

Separating oil phase from aqueous phase using an apertured oleophilic sieve in contact with an apertured cylindrical cage wall

CA 1280075 C · Owner: Kruyer, Jan · Inventors: Kruyer, Jan

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 mixture containing viscous oil phase and an aqueous phase is separated by means of an apertured oleophilic endless belt supported in a separation zone by a revolving cylindrical cage having apertured sidewalls and supported in a recovery zone by a support roller, the belt continuously moving through the separation zone and the recovery zone. The mixture is introduced into the rotating cage in the separation zone. The endless belt partly covers the outside surface of the cylindrical cage sidewall. The mixture tumbles inside the cage as it rotates and passes through the cage sidewall apertures to the belt surface, where the aqueous phase passes through the belt apertures for removal while …

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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, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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.
FiledJune 27, 1984
GrantedFebruary 12, 1991
Term endedFebruary 12, 2008
Patent numberCA 1280075 C
Classification (IPC)B01D17/02 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedJune 27, 1984Patent grantedFeb 12, 1991Term endedFeb 12, 2008

Sources & verification

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