Pump/separator apparatus for viscous liquids
CA 2229018 A1 · Owner: Bowrio Energy Ltd. · Inventors: Markovitch, Peter T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pump/separator apparatus for pumping a viscous fluid mixture upwardly from an, underground location and for carrying out at least partial separation of the mixture is, described. The apparatus comprises a generally cylindrical housing having an intake at, or near its lower end and an upper discharge end. One or more impellers (2) is mounted, in the housing to rotate about a drive shaft 91) each impeller (2) being of , upwardly, diverging external shape and arranged to generate a spirally upwardly moving column of, fluid which therefore induces inward flow of the mixture through the intake.
Read the whole patent
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 February 3, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2020.
- 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.