Method for back extraction of indium from organic solvent phase
CA 1193443 A · Owner: Nippon Mining & Metals Company, Limited · Inventors: Ogata, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for back-extracting indium from an indium-containing organic solvent phase based on an alkyl phosphonic acid monoalkyl ester is characterized in that an aqueous solution containing hydrochloric acid and a chloride of a metal less noble than indium is employed as the extractant. The chloride is that of an alkali metal or alkaline earth metal.
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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 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2002.
- 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.