ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,311, issued on March 18, was assigned to NORITZ Corp. (Hyogo, Japan).
"Heat exchanger and water heating device including the same" was invented by Naoya Shiotsu (Akashi, Japan) and Norihide Wada (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger includes: a case which has a first side wall that stands upright in a vertical height direction and to which a heating medium is supplied inside; and heat transfer tubes for heating hot water housed in the case. Two end portions of the heat transfer tubes in a longitudinal direction are joined to the first side wall via brazing portions, and the heat transfer tubes are supported b...