ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,350, issued on Feb. 18, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Heat exchanger and refrigeration cycle apparatus" was invented by Yoji Onaka (Tokyo) and Takashi Matsumoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger includes: flat heat exchange tubes each having an elongated cross section and planar outer surfaces that face each other, and each including a fluid flow passage; and corrugated fins each formed in the shape of waves and provided between associated adjacent ones of the heat exchange tubes. The corrugated fins each having ridge portions that correspond to ridges of the waves and that are joined to the...