ALEXANDRIA, Va., July 21 -- United States Patent no. 12,685,338, issued on July 21, was assigned to Philip Morris Products S.A. (Neuchatel, Switzerland).
"Heater assembly to provide a temperature gradient" was invented by Robert Emmett (Neuchatel, Switzerland) and Eva Saade Latorre (Colombier, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heater assembly for an aerosol-generating system is provided, the heater assembly including: a liquid aerosol-forming substrate including at least two compounds, the first compound having a first boiling point and the second compound having a second boiling point; a retention material containing the liquid aerosol-forming substrate; and a heating element conf...