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Expired Canadian patentCanada

Averaging orifice primary flow element

CA 2481869 C · Owner: Beachey, Terry Xen · Inventors: Beachey, Terry Xen; Orleskie, Charles Theodore

CIPO record

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Abstract From the Canadian patent

A process flow device that includes a self-averaging orifice plate type of primary flow element (2) for measuring by a differential pressure process, the volumetric rate of fluid flow at a point in a fluid carrying conduit (8) where the velocity profile (7) of the fluid is asymmetric with respect to the longitudinal axis of the conduit. The improved flow element comprises a planar flow-impeding plate (2) disposed transversely across the interior of the conduit (8) and perpendicular to the longitudinal axis thereof. The plate includes at least three circular apertures (22) eccentrically disposed with respect to the longitudinal axis of the conduit to create static pressure averaging …

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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 February 21, 2003 and granted May 20, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 21, 2003
GrantedMay 20, 2014
Term endedFebruary 21, 2023
Patent numberCA 2481869 C
Classification (IPC)G01F1/34 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedFeb 21, 2003Patent grantedMay 20, 2014Term endedFeb 21, 2023

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