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Canadian application, no grantCanada

Method and apparatus for preventing slug growth in a pipeline

CA 2021796 A1 · Owner: Van Der Steeg, Jan · Inventors: Van Der Steeg, Jan

CIPO record

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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 method for preventing slug growth in a pipeline system (1, 7) during simultaneous transportation of gas and liquid through the pipeline system (1 7). Flux, control means (11) are provided for controlling the fluxes of gas and liquid in a section of the pipeline system (1, 7). The fluid flux, defined as the sum of the fluxes of the gas and the liquid, is determined at the downstream end of the pipeline system (1 7). The, flux control means (11) is adjusted to minimize the fluid flux. (Figure 1), D06/T5358FF

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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 July 23, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 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.
FiledJuly 23, 1990
GrantedNo grant recorded
Term endedJuly 23, 2010
Patent numberCA 2021796 A1
Classification (IPC)F17D1/20 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJuly 23, 1990Term endedJuly 23, 2010

Sources & verification

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