Electrochemical process for purifying hydroxide compounds
CA 2217626 A1 · Owner: Sachem, Inc. · Inventors: Sharifian, Hossein; Mooney, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In one embodiment, the invention relates to a process for purifying solutions containing a hydroxide compound including the steps of: (A), providing an electrochemical cell containing an anode a cathode, a cation, selective membrane and an anion selective membrane wherein the cation, selective membrane is positioned between the cathode and the anion selective membrane, and the anion selective membrane is positioned between the cation selective membrane and the anode thereby defining a, feed compartment between the cation selective membrane and the anion selective membrane, a recovery compartment between the cathode and the cation selective membrane. and a water compartment between the anion …
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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 October 2, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2019.
- 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.