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Expired Canadian patentCanada

Device for separating liquids and/or solids from a high-pressure gas stream

CA 2018251 C · Owner: N.V. Nederlandse Gasunie · Inventors: Oranje, Leendert

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The invention relates to a device for separating liquid and/or solids from a high-pressure gas stream comprising a, cylindrical vessel with a virtually vertically set axis fitted with a top compartment to which the gas stream is fed; a middle compartment comprising a number of blades set helicoidally around the axis; a bottom compartment for separating the gas and the liquid and/or solids and a coaxial gas discharge pipe projecting upward from the bottom compartment through the middle and the top compartments, around which helicoidal blades have been fixed, each helicoidal blade being composed of a bottom section with a constant pitch and a section with a pitch gradually increasing in …

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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

  • Filed June 5, 1990 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2012.
  • 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 5, 1990
GrantedMay 2, 2000
Term endedJune 5, 2010
Patent numberCA 2018251 C
Classification (IPC)B04C3/00 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 5, 1990Patent grantedMay 2, 2000Term endedJune 5, 2010

Sources & verification

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