ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,418, issued on Oct. 21, was assigned to Bracco Suisse SA (Cadempino, Switzerland).

"Gas-filled microvesicles with ligand" was invented by Philippe Bussat (Pers-Jussy, France), Samir Cherkaoui (Feigeres, France) and David Lazarus (Saint-Julien-en-Genevois, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "Formulations of gas-filled microvesicles comprising a ligand, which may advantageously be used in methods for separating cells or biological materials. The formulations comprise a phospholipid and a suitable mixture of a pegylated phospholipid and of a pegylated phospholipid comprising a ligand."

The patent was filed on Dec. 19, 2019, under App...