ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,198, issued on March 25, was assigned to FUJI ELECTRIC Co. LTD. (Kawasaki, Japan).
"Finned tube heat exchanger" was invented by Masaaki Ajima (Kawasaki, Japan), Masamichi Iwasaki (Kawasaki, Japan), Jun Nakamura (Kawasaki, Japan) and Yasuhiro Yokoyama (Kawasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A finned tube heat exchanger includes a plurality of tube arrays, each of which includes a plurality of heat transfer tubes that each extend parallel to one another and are disposed at a predetermined pitch in a first direction that intersects a flow direction of heat exchanging air, in a second direction that intersects the first directio...