ALEXANDRIA, Va., Aug. 12 -- United States Patent no. RE50,987, issued on Aug. 11, was assigned to ATTERO RECYCLING PVT. LTD. (Roorkee, India).

"Method of recovering metals from spent li-ion batteries" was invented by Nitin Gupta (Roorkee, India), G. Prabaharan (Roorkee, India), Smruti Prakash Barik (Roorkee, India) and Bhuvnesh Kumar (Roorkee, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an improved process and method of recovering metals of value from used Lithium Ion batteries. More particularly, the invention provides a method for recovering cobalt and lithium along with other metals of value wherein the method includes physical processes for separation, limiting t...