Chromate ion removal from aqueous chlorate solutions
CA 1112379 A · Owner: Atochem North America, Inc. · Inventors: Hodges, Jimmie R.; Grier, Jesse G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Chromate ions present in chlorate rich aqueous solutions e.g. as obtained, from the electrolysis of sodium chloride solutions are substantially completely, removed by passing said solution through a bed of a mixture of an anion exchange resin in the chloride form and a weak cation exchange resin in a conditioned hydrogen form. - 1 -
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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 November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1998.
- 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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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.