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. 19, 2025
Filed:
Sep. 09, 2021
Applicant:
University of Kentucky Research Foundation, Lexington, KY (US);
Inventors:
Wencai Zhang, Lexington, KY (US);
Rick Q. Honaker, Lexington, KY (US);
Assignee:
University of Kentucky Research Foundation, Lexington, KY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22B 59/00 (2006.01); C22B 3/22 (2006.01); C22B 3/44 (2006.01);
U.S. Cl.
CPC ...
C22B 59/00 (2013.01); C22B 3/22 (2013.01); C22B 3/44 (2013.01);
Abstract
The present invention concerns a process of selective precipitation for the purpose of recovering rare earth elements from acidic media derived from coal and coal byproducts via two main steps of sequential precipitation and selective precipitation. An intermediary step of re-precipitation can be included to further increase RRE concentrations, as well as improve contaminant metal removal.