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Expired Canadian patentCanada

Improved fluid mixing nozzle and method

CA 2238629 C · Owner: Lott, W. Gerald · Inventors: Lott, W. Gerald

CIPO record

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Abstract From the Canadian patent

An improved fluid mixing nozzle (10) and method in which a first fluid flows , therefrom to mix with a second fluid external the nozzle for inducing vortex , creation and chaotic turbulent flow. The nozzle (10) has a body (20) with a cavity (26) extending therethrough from the inlet end (22) to the outlet end (24). The cross-sectional area of the inlet orifice (30) of the nozzle (10) is greater than its outlet orifice (40) cross-sectional area. The outlet orifice (40) cross-sectional shape has a substantially circular central portion (42) and at least one (but typically more than one) protrusion (50) extending from the perimeter of the central portion (42). Generally the protrusions …

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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 August 28, 1996 and granted April 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 1996
GrantedApril 9, 2002
Term endedAugust 28, 2016
Patent numberCA 2238629 C
Classification (IPC)B05B1/34 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedAug 28, 1996Patent grantedApril 9, 2002Term endedAug 28, 2016

Sources & verification

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