US Patent Issued to MITSUBISHI GAS CHEMICAL on Jan. 13 for "Method for producing Alpha-hydroxy carboxylic acid composition" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,555, issued on Jan. 13, was assigned to MITSUBISHI GAS CHEMICAL COMPANY INC. (Tokyo).

"Method for producing Alpha-hydroxy carboxylic acid composition" was invented by Michihiro Yuri (Niigata, Japan) and Shu Suzuki (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing an Alpha-hydroxycarboxylic acid composition includes distilling a mixed solution containing an Alpha-hydroxycarboxylic acid, water, and an organic impurity, wherein the distillation is performed under a condition that an upper limit temperature of a bottoms liquid is 140deg C. or lower."

The patent was filed on July 28, 2021, under Application No. 18/01...