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. 17, 2021
Filed:
Jan. 22, 2019
Applicant:
Iowa State University Research Foundation, Inc., Ames, IA (US);
Inventors:
Denis Prodius, Ames, IA (US);
Cajetan Ikenna Nlebedim, Ames, IA (US);
Anja-Verena Mudring, Stockholm, SE;
Assignee:
Iowa State University Research Foundation, Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 11/04 (2006.01); C01F 17/10 (2020.01); C01F 17/20 (2020.01); C02F 1/54 (2006.01); C07C 51/48 (2006.01); C01F 17/17 (2020.01); B03D 3/00 (2006.01); B01D 21/01 (2006.01); C02F 101/20 (2006.01); C02F 103/10 (2006.01); C01F 17/30 (2020.01); C22B 59/00 (2006.01); C07C 55/07 (2006.01);
U.S. Cl.
CPC ...
B01D 11/0492 (2013.01); B01D 11/04 (2013.01); C01F 17/10 (2020.01); C01F 17/17 (2020.01); C01F 17/20 (2020.01); C02F 1/54 (2013.01); C07C 51/48 (2013.01); B01D 21/01 (2013.01); B03D 3/00 (2013.01); C01F 17/30 (2020.01); C02F 2101/20 (2013.01); C02F 2103/10 (2013.01); C07C 55/07 (2013.01); C22B 59/00 (2013.01);
Abstract
A method is provided for separating and/or purifying different metal oxalates by mixing the different metal oxalates in an aqueous solution comprising oxalic acid and an organic base so that at least one metal oxalate is soluble and at least another metal oxalate is not soluble. Different rare earth metal oxalates and/or transition metal oxalates can be separated.