ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,341, issued on May 27, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Heat transfer tube and heat exchanger" was invented by Ken Satou (Osaka, Japan), Tomohiko Sakamaki (Osaka, Japan), Kengo Uchida (Osaka, Japan) and Yoshio Oritani (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat transfer tube includes first flow paths aligned in the heat transfer tube. Each of the first flow paths includes a section with a rectangular shape that is elongated in a first direction parallel with an alignment direction of the first flow paths. Each of the first flow paths includes protrusions disposed on an inner surface. The section of each...