ALEXANDRIA, Va., July 23 -- United States Patent no. 12,368,386, issued on July 22, was assigned to HITACHI ASTEMO LTD. (Hitachinaka, Japan).

"Power conversion device and method for manufacturing power conversion device" was invented by Yusuke Takagi (Hitachinaka, Japan), Yujiro Kaneko (Hitachinaka, Japan), Masanori Miyagi (Tokyo) and Xudong Zhang (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power conversion device including: a semiconductor device; a first water channel and a second water channel stacked in a predetermined stacking direction and installed with the semiconductor device interposed therebetween; and a connecting water channel connecting the first water channel and the second water c...