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Expired Canadian patentCanada

Transporting fluids through a conduit

CA 2548645 C · Owner: Shell Internationale Research Maatschappij B.V. · Inventors: Hollander, Elco Dick

CIPO record

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Abstract From the Canadian patent

A method of sequentially transporting a first and a second fluid at a volumetric flow rate through a conduit having a cross-section wherein the , first and second fluids have different densities which method comprises the , steps of estimating a critical stratification condition for a fluid density profile along the conduit, which condition takes into account the densities of the first and second fluids, the cross-section of the conduit and the volumetric flow rate, and wherein violating the critical stratification condition likely results in stratification of fluids to occur; and feeding sequentially only first fluid, a buffer fluid and only second fluid into the conduit, wherein …

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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 December 7, 2004 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 7, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 7, 2004
GrantedJanuary 24, 2012
Term endedDecember 7, 2024
Patent numberCA 2548645 C
Classification (IPC)F15D1/06 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 7, 2004Patent grantedJan 24, 2012Term endedDec 7, 2024

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