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:
Jul. 03, 1990
Filed:
Jul. 06, 1989
Applicant:
Inventors:
James P Coleman, Maryland Heights, MO (US);
Charles R Graham, St. Charles, MO (US);
Bruce F Monzyk, Maryland Heights, MO (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562623 ; 260404 ; 562621 ; 562622 ;
Abstract
Dihydroxamic acids derived from succinyl compounds are used in conjunction with monohydroxamic acids to extract gallium, e.g. N,N'-dimethyl n-decylsuccino dihydroxamic acid and a monohydroxamic acid in an organic solvent extracts gallium in the presence of other metals from gallium bearing aqueous solutions.