ALEXANDRIA, Va., July 9 -- United States Patent no. 12,351,471, issued on July 8, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).
"Lithium purification and conversion" was invented by Dominic Vincent Perroni (Sugar Land, Texas), Gary W. Sams (Houston), Florence Binet (Houston) and Rod William Shampine (Sugar Land, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "Lithium recovery processes are described using concentration and conversion techniques. A vaporizer or membrane can be used to concentrate lithium and precipitate impurities. A conversion process can be used to replace anions in lithium bearing streams by adding a second anion and precipitating lithium in a salt with the second...