ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,513, issued on March 25, was assigned to Hitachi Astemo Ltd. (Hitachinaka, Japan).

"Electric system for cooling a motor and inverter unit" was invented by Masanori Sawahata (Tokyo), Masahiro Hori (Tokyo), Hideaki Goto (Tokyo) and Takeshi Tokuyama (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to improve cooling capability of a bus bar with a simple system.An electric system includes a motor unit including a stator and a rotor, the motor unit being cooled by a refrigerant, an inverter unit that supplies electric power to a winding of the stator, a wiring portion that transmits electric power output from t...