ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,451, issued on April 29, was assigned to MEDTECH PRODUCTS INC. (Tarrytown, N.Y.).

"Borate ester complexes of Alpha-hydroxy carboxylic acids and their conjugate base buffers" was invented by Mackenzie Shelton (Gretna, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composition is provided for use as a buffer in personal care and pharmaceutical formulations. The composition comprises complex esters of boric acid and simple Alpha-hydroxy carboxylic acids, and the corresponding basic conjugate salts of complex esters of boric acid and simple Alpha-hydroxy carboxylic acids. The weight of boric acid and Alpha-hydroxy acid is up to about 1.0% by weight...