Process for recovery of zirconium basic sulfate
CA 2303558 A1 · Owner: Ati Properties, Inc. · Inventors: Sommers, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for providing a zirconium basic sulfate includes providing a zirconium oxychloride solution, and then dialyzing the solution against a liquid selected, from water and an aqueous solution across at least one anion exchange membrane to, provide a dialyzate and diffusate. The dialyzate includes at least 90 percent of the, zirconium ions of the zirconium oxychloride chloride solution and has a total acidity that, is lower than the original zirconium oxychloride solution. A precipitate including, zirconium basic sulfate may be formed from at least a portion of the diffusate. The, zirconium oxychloride solution may be provided for example, by dissolving , zirconium tetrachloride …
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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 March 31, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2022.
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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.