ALEXANDRIA, Va., March 31 -- United States Patent no. 12,592,377, issued on March 31, was assigned to LG ENERGY SOLUTION LTD. (Seoul, South Korea).

"Method of preparing negative electrode active material" was invented by Suk Woo Lee (Daejeon, South Korea) and Dong Sik Yoon (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method of preparing a negative electrode active material which includes (a) dispersing an active material core in a solution containing a surfactant to coat the surfactant on the active material core, (b) adding and dispersing a first precursor, which is bondable with the surfactant by electrostatic attraction, in the solution, (c) adding and dispersing a s...