ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,448, issued on Dec. 23, was assigned to University College Cardiff Consultants Ltd. (Cardiff, Great Britain) and Aberystwyth University (Aberystwyth, Great Britain).

"Antibacterial and antiparasitic quinoxaline-2,3-diamine derivatives" was invented by Andrea Brancale (Cardiff, Great Britain), Gilda Padalino (Aberystwyth, Great Britain) and Karl Hoffman (Aberystwyth, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, for use in the treatment of a patient infected with pathogenic organisms; wherein X and Y are each independently selected from C, N, O and S, ...