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Expired Canadian patentCanada

Hydrodynamic cavitation crystallization device and process

CA 2517727 C · Owner: Five Star Technologies, Inc. · Inventors: Kozyuk, Oleg V.

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 device and process for crystallizing a compound using hydrodynamic cavitation comprising the steps of mixing at least one stream of a solution of such compound to be crystallized with at least one stream of an anti-solvent and passing the mixed streams at an elevated pressure through a local constriction of flow to create hydrodynamic cavitation thereby causing nucleation and the direct production of crystals.

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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 March 4, 2004 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 4, 2004
GrantedSeptember 4, 2012
Term endedMarch 4, 2024
Patent numberCA 2517727 C
Classification (IPC)B01D9/00

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMarch 4, 2004Patent grantedSep 4, 2012Term endedMarch 4, 2024

Sources & verification

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