ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,856, issued on April 22, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Heat exchanger and air-conditioning apparatus" was invented by Ryota Akaiwa (Tokyo), Yoji Onaka (Tokyo), Yohei Kato (Tokyo), Norihiro Yoneda (Tokyo) and Satomi Asai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger includes heat transfer tubes disposed in an up-down direction and a distributor distributes refrigerant to the heat transfer tubes. The distributor has a main body having a first flow passage through which refrigerant flows upward, and an insertion part disposed inside the main body. When an upper one and a lower one of two among the heat tran...