ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,760, issued on July 22, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).

"Process for the synthesis of polycarbonates from cyclic monothiocarbonates" was invented by Peter Rudolf (Ludwigshafen, Germany), Indre Thiel (Ludwigshafen, Germany) and Thomas Maximilian Wurm (Ludwigshafen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process can be used for the synthesis of compounds containing at least one non-cyclic carbonate group, wherein a compound A) containing at least one five-membered cyclic monothiocarbonate group is reacted with at least one hydroxy group of a compound B) or of compound A) itself."

The patent was filed on May...