US Patent Issued to MITSUBISHI HEAVY INDUSTRIES on July 1 for "Heat exchanger core, heat exchanger, and method of producing heat exchanger core" (Japanese Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,475, issued on July 1, was assigned to MITSUBISHI HEAVY INDUSTRIES LTD. (Tokyo).

"Heat exchanger core, heat exchanger, and method of producing heat exchanger core" was invented by Masaya Hatanaka (Tokyo), Hiroyuki Nakaharai (Tokyo), Nobuhide Hara (Tokyo), Yoichi Uefuji (Tokyo), Shunsaku Eguchi (Tokyo), Takuo Oda (Tokyo), Koichi Tanimoto (Tokyo) and Masashi Kitamura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger core includes: a plurality of internal passages; and a header passage communicating with the plurality of internal passages. An inner wall of the header passage has greater surface roughness than passage walls of the pl...