US Patent Issued to Rittec Umwelttechnik on Dec. 16 for "Process for extracting aromatic dicarboxylic acids from their metal salts" (German Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,346, issued on Dec. 16, was assigned to Rittec Umwelttechnik GmbH (Luneburg, Germany).

"Process for extracting aromatic dicarboxylic acids from their metal salts" was invented by Clemens Muller (Braunschweig, Germany), Esther Brepohl (Braunschweig, Germany), Lars Biermann (Harsum, Germany), Carsten Eichert (Reppenstedt-Dachtmissen, Germany) and Stephan Scholl (Braunschweig, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for extracting aromatic dicarboxylic acids from an outlet stream of a basic depolymerization of polycondensates containing metal carboxy lates of the aromatic dicarboxylic acid to be...