ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,411, issued on Aug. 5.

"Method for obtaining inorganic sorbent for extraction of lithium from lithium-containing brines" was invented by Pavel Kudryavtsev (Rehovot, Ill.), Nikolai Kudriavtsev (Holon, Israel) and Iliya Kudryavtsev (Odintsovo, Russia).

According to the abstract* released by the U.S. Patent & Trademark Office: "The proposed method relates to producing inorganic sorbents for extracting lithium from lithium-containing natural and industrial brines. The method consists of a plurality of sequential steps, which include contacting a mixture of a soluble manganese (II) salt and aluminum (III) salt with an alkali solution in the presence of an alkali metal permanganate to o...