ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,405, issued on May 26, was assigned to Cleantech Building Materials PLC (London).

"Integrated process for generating acid anhydrides" was invented by Johnathan Gorke (Charlotte, N.C.), Brian Hashiguchi (Naperville, Ill.), Michael Konnick (Aurora, Ill.), Jay Kouba (St. Helena, Calif.), Erik Scher (San Francisco), Jeremy Patt (Naperville, Ill.) and Mary Bjorklund (Lombard, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a first process of producing an anhydride of an organic mono-acid comprising performing a transanhydridization reaction of an organic mono-acid and a thermally regenerable anhydride to produce the anhydride of the organi...