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:
Aug. 28, 1979
Filed:
Apr. 14, 1978
Applicant:
Inventor:
Richard A Johnson, Midland Park, NJ (US);
Assignee:
Halcon Research & Development Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C01G / ; C22B / ; C01F / ;
U.S. Cl.
CPC ...
423112 ; 1510 / ; 2604 / ; 4236585 ;
Abstract
Trivalent thallium values are extractively recovered from aqueous media containing dissolved trivalent and monovalent thallium values by treating the aqueous medium with an extractant comprising a carboxylic acid medium having limited solubility in water to preferentially extract at least a portion of the dissolved trivalent thallium values into the carboxylic acid extractant medium and recovering a carboxylic acid extract containing the extracted trivalent thallium values as a separate phase.