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:
Feb. 03, 2026
Filed:
Jul. 28, 2023
Applicant:
The University of Toledo, Toledo, OH (US);
Inventors:
Jon R. Kirchhoff, Toledo, OH (US);
Sandhya Adhikari, Toledo, OH (US);
Govind Sharma Shyam Sunder, Toledo, OH (US);
Assignee:
The University of Toledo, Toledo, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/26 (2006.01); B01D 15/20 (2006.01); C08G 73/02 (2006.01); C22B 3/24 (2006.01); C22B 59/00 (2006.01); C22B 60/02 (2006.01);
U.S. Cl.
CPC ...
B01J 20/262 (2013.01); B01D 15/203 (2013.01); C08G 73/0206 (2013.01); C22B 3/24 (2013.01); C22B 59/00 (2013.01); C22B 60/0265 (2013.01); C22B 60/0291 (2013.01);
Abstract
A method for extracting a metal species from a solution is described, where the metal species comprises a rare earth element, Th, or U. The method involves the use of poly(caffeic acid) as a sorbent material. The poly(caffeic acid) may be crosslinked with a diamine crosslinker such as ethylenediamine.
Kirchhoff, Jon. (2026). Environmentally friendly polymeric sorbent material for the extraction and determination of rare earth elements, thorium, and uranium (U.S. Patent No. 12539503). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12539503
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile