Process for selective extraction of metal ions from aqueous solutions and extracting agents suitable for that purpose
CA 1107975 A · Owner: Stamicarbon B.V. · Inventors: Kivits, Hendrikus P. M.; Lotens, Jan P.; Tels, Martinus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An extraction process Is described for the selective separation of bivalent metal ions belonging to the group Cu Co, Nl, and Zn In aqueous solution of Cu- and Ni-ions Cu- and Zn-ions or, Cu- and Co-ions, wherein there is used as the extraction medium one or more unsaturated fatty acids, optionally in solution and/or in admixture with saturated fatty acids and an aliphatic oxime. - 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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
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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.