The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 1990
Filed:
Aug. 01, 1989
Roy G Lewis, Tucson, AZ (US);
Henkel Corporation, Ambler, PA (US);
Abstract
An improved process of extraction of gallium from aqueous solutions thereof to provide for recovery of the gallium in a very pure form, either as the metal or as the hydroxide. The process involves two extraction steps and two strip or scrub steps employing different extractant in each extraction and an acidic strip step after the first extraction and a basic strip step after the second extraction. The first extraction involves the use of 8-hydroxyquinoline extractant while the second extraction employs an amine extractant. The extraction process is a liquid-liquid process in which the water insoluble extractant compounds are employed in a water insoluble, water immiscible, organic solvent.