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. 16, 2013
Filed:
Nov. 26, 2009
Applicants:
Hee-young Shin, Daejeon, KR;
Whan-tae Kim, Daejeon, KR;
In-kook Bae, Daejeon, KR;
Soo-chun Chae, Seoul, KR;
Inventors:
Hee-Young Shin, Daejeon, KR;
Whan-Tae Kim, Daejeon, KR;
In-Kook Bae, Daejeon, KR;
Soo-Chun Chae, Seoul, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 59/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for extracting rare earth elements from monazite is disclosed. The method includes milling a mixture of monazite including phosphates and rare earth elements and sodium hydroxides inside a mill containing a plurality of balls to form powder by colliding the mixture into balls with each other, converting the mixture into rare earth hydroxides and sodium phosphates through the reaction occurring in the process of repeated collision, and extracting rare earth elements from the powder.