Controlled shear and turbulence flow pattern within a liquid in a vessel
CA 2433053 A1 · Owner: Nova Chemicals Inc. · Inventors: Petela, Grazyna; Bleijenberg, Karel Cornelis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a process to create without mechanical agitation a zone of low shear low turbulence flow pattern, within a continuous phase liquid contained in a vessel by a continuous or periodic injection of an inert, immiscible low density fluid, preferably gas, into the liquid to form such a flow pattern recovering the fluid above the, free surface of the liquid and preferably re-injecting it into the liquid. The, invention is particularly useful if the continuous liquid contains a dispersed phase which should be distributed within the continuous liquid without excessive particle agglomeration or breakups in order to largely preserve the initial particle size …
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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 June 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.