Method for flocculating suspensions containing swelled layered chalcogenide
CA 1287285 C · Owner: Kirker, Garry W. · Inventors: Krishnamurthy, Sowmithri; Kirker, Garry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method of flocculating a suspension containing a) a layered oxide material intercalated with a hydrophobic swelling agent and b) nonintercalated hydrophobic swelling agent the, suspension is contacted with a ketone water, and a cationic organic, polymer. The resulting mixture is maintained at a sufficiently alkaline pH to prevent removal of the intercalated swelling agent during the flocculation treatment.
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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 August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.