ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,484, issued on Jan. 27, was assigned to Studiengesellschaft Kohle gGmbH (Muelheim, Germany).

"Process for preparing dimeric phosphazene derived BrOnsted acids" was invented by Benjamin List (Muelheim am der Ruhr, Germany), Sebastian Armin Schwengers (Muelheim an der Ruhr, Germany), Chandra Kanta De (Muelheim an der Ruhr, Germany) and Yihang Li (Muelheim an der Ruhr, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention describes a new synthesis to chiral imidodiphosphoryl compounds, their salts, metal complexes as well as derivatives thereof. Said chiral imidodiphosphoryl compounds can be used as catalysts for Bronsted acid/Br...