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Canadian application, no grantCanada

Apparatus for the purification of liquids and a method of manufacturing and of operating same

CA 2228886 A1 · Owner: Tessier, David F. · Inventors: Tessier, David F.

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 of manufacturing an apparatus for the electrodeionization of a fluid includes determining the flow rate of the fluid to be deionized its , initial concentration, of ionic impurities a desired post-processing concentration of ionic impurities and, appropriately selecting the number of diluting compartments for use in the apparatus and, the electrical current to be applied between the anode and cathode in the apparatus and, manufacturing the apparatus accordingly. A method of operating an apparatus for, electrodeionization of a fluid includes monitoring the concentration of ionic impurities of, the fluid to be deionized monitoring the concentration of ionic impurities of the …

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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 February 6, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 6, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 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.
FiledFebruary 6, 1998
GrantedNo grant recorded
Term endedFebruary 6, 2018
Patent numberCA 2228886 A1
Classification (IPC)C02F1/46 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedFeb 6, 1998Term endedFeb 6, 2018

Sources & verification

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