Integral water demineralizer system and method
CA 1285666 C · Owner: Belco Pollution Control Corporation · Inventors: Chen, James Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water demineralizer system and method is provided in which at least three beds of resin particles connected in series flow arrange ment preferably within a single vessel for substantially removing metal ions such as calcium and magnesium from water feed by exchange with hydrogen ions. The raw feed water flows first through a cation resin bed, then through an anion resin bed and then through a bed, of mixed cation and anion resins and preferably flows downwardly, through the beds. After the resin beds become saturated with metal ions from the feed water, mainly by calcium and magnesium ions the, beds are regenerated by first backwashing with water then, chemically treating with acid and …
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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
- Granted July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.