ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,178, issued on March 31.
"Air sterilisation apparatus" was invented by Istvan Andor Sumegi (Dunakeszi, Hungary) and Agnes Sipos (Dunakeszi, Hungary).
According to the abstract* released by the U.S. Patent & Trademark Office: "The air sterilizer comprises a housing (1), at one end of which there is an air inlet unit (5) in which a fan (3) is arranged in a fixed manner; a spiral plate heat exchanger (2) arranged in the housing (1), in the center of which an electric heating unit (7) is arranged; an air outlet unit (6) at the other end of the housing (1); wherein the spiral plate heat exchanger (2) has an air inlet duct (31) running from the air inlet unit (5) to the electric heate...