ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,154, issued on March 17, was assigned to CHEMTREAT INC. (Glen Allen, Va.).

"Methods and systems for evaluating heat exchangers" was invented by Kevin Boudreaux (Sioux Falls, S.D.), David Craig Thompson (Carlsbad, Calif.), John R Lewis (North Wales, Pa.), Avish Patidar (Indore, India), Nicolaas A Van Goor (Edina, Minn.) and Timothy S Switzer (Midlothian, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are provided for evaluating performance of a heat exchanger, such as a condenser, using rules-based logic. A plurality of sensors can measure various operating properties of the heat exchanger and transmit corresponding measureme...