ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,694, issued on July 21, was assigned to Evonik Operations GmbH (Essen, Germany).
"Method of extracting carbonic acid, aliphatic acids, esters and alcohols from an aqueous medium" was invented by Thomas Haas (Munster, Germany) and Christian Richter (Munster, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of extracting at least one selected from carbonic acid, aliphatic acid, aliphatic acid ester and aliphatic alcohol from an aqueous medium, the method comprising the steps: (a) contacting the carbonic acid, aliphatic acid, aliphatic acid ester and/or aliphatic alcohol in the aqueous medium with an extr...