ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,157, issued on Aug. 26, was assigned to TECHNISCHE UNIVERSITAT CLAUSTHAL (Clausthal-Zellerfeld, Germany).
"Energy-efficient solvent-free method for producing metal chelates" was invented by Dieter E. Kaufmann (Goslar, Germany), Jan C. Namyslo (Herzberg am Harz, Germany), Roman Florescu (Goslar, Germany) and Birgit Wawrzinek (Clausthal-Zellerfeld, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for producing, amongst other things, amino-acid and/or hydroxycarboxylic-acid metal chelates, a solvent-free mixture of at least one metal oxide, metal hydroxide, metal carbonate or oxalate, and the solid organic acid i...