ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,288, issued on May 27, was assigned to Altria Client Services LLC (Richmond, Va.).

"E-vaping device cartridge with superabsorbent polymer" was invented by Georgios Karles (Richmond, Va.) and Erica Sena (Midlothian, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cartridge for an e-vaping device includes a reservoir configured to hold pre-vapor formulation, a vaporizer assembly configured to draw at least some of the pre-vapor formulation from the reservoir and vaporize the drawn pre-vapor formulation to form a vapor, and a superabsorbent polymer configured to absorb free water from pre-vapor formulation held in the reservoir. The superabsorbent...