US Patent Issued to TORAY INDUSTRIES on Aug. 18 for "Method of producing carboxylic acid" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,709,763, issued on Aug. 18, was assigned to TORAY INDUSTRIES Inc. (Tokyo).

"Method of producing carboxylic acid" was invented by Daijiro Tsukamoto (Kamakura, Japan), Kenji Kawamura (Kamakura, Japan) and Katsushige Yamada (Kamakura, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Efficient production of a carboxylic acid is provided by a method of producing a carboxylic acid, which includes the following steps (A) and (B): (A) filtering a carboxylic acid-containing fermentation broth by passing said fermentation broth through a nanofiltration membrane, to obtain a carboxylic acid-containing filtrate from the permeate side of the membrane; and (B) ex...