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:
Oct. 09, 2012
Filed:
Dec. 20, 2010
Karthick Vilapakkam Gourishankar, Bangalore, IN;
Alok Mani Srivastava, Niskayuna, NY (US);
Prasanth Kumar Nammalwar, Bangalore, IN;
Satya Kishore Manepalli, Bangalore, IN;
Karthick Vilapakkam Gourishankar, Bangalore, IN;
Alok Mani Srivastava, Niskayuna, NY (US);
Prasanth Kumar Nammalwar, Bangalore, IN;
Satya Kishore Manepalli, Bangalore, IN;
General Electric Company, Niskayuna, NY (US);
Abstract
A method for recovering at least one rare earth element from a phosphor is presented. The method includes a halogenation step (a) and a reduction step (b). The phosphor is first halogenated in a molten salt to convert at least one rare earth constituent contained therein to a soluble rare earth halide. Then, the rare earth halide in the molten salt can be reduced, to convert the rare earth halide to a rare earth element in its elemental state. A method for individually recovering multiple rare earth elements from a phosphor is also presented.