ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,690, issued on Sept. 8, was assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER LTD. (Sagamihara, Japan).
"Electric centrifugal compressor" was invented by Naomichi Shibata (Sagamihara, Japan), Byeongil An (Sagamihara, Japan) and Takaaki Yoshizawa (Sagamihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric centrifugal compressor includes: an electric motor including a rotational shaft; a first impeller disposed on one end side of the rotational shaft; a first bearing rotatably supporting the rotational shaft at a position between the first impeller and the electric motor and including a lubricant; and a first bearing hous...