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Expired Canadian patentCanada

Apparatus for separating solids from well fluids

CA 2041479 C · Owner: Martin, Robert Lynden · Inventors: Martin, Robert Lynden

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

In general, presently existing separators for the effluents of gas and oil wells are large volume low pressure, devices, which usually rely on gravity for the separation of solids from produced well fluids. A simple separator for separating solids and liquids from oil or gas well effluents capable of operating at high pressures includes an elongated, horizontal tank with an inlet in one end thereof for receiving well effluent level control ports, in a side of the tank for maintaining liquid in the tank at a predetermined level below the longitudinal center of the tank a, slotted baffle extending downwardly from the top of the tank near the inlet end for defining an inlet chamber permitting …

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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 April 30, 1991 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2013.
  • 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 30, 1991
GrantedApril 21, 1998
Term endedApril 30, 2011
Patent numberCA 2041479 C
Classification (IPC)B01D21/02 +1 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedApril 30, 1991Patent grantedApril 21, 1998Term endedApril 30, 2011

Sources & verification

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