ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,015, issued on Nov. 11, was assigned to REC Reliable Engineering Concepts GmbH (Stuttgart, Germany).

"Method of making fatty acid esters" was invented by Axel Ingendoh (Odenthal, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Method of transesterifying a fatty acid triglyceride with a C1-30 aliphatic alcohol, the method comprising step (A): (A) heating the fatty acid triglyceride with the C1-30 aliphatic alcohol in the presence of an acid; wherein the acid is selected from the group consisting of a sulfonic acid, a disulfonic acid and a hydroxycarboxylic acid, and a mixture thereof; the molar ratio of fatty acid triglyceride to aliphatic alc...