ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,245, issued on May 20, was assigned to MITSUBISHI HEAVY INDUSTRIES LTD. (Tokyo).

"Electrolytic smelting system" was invented by Takashi Nakano (Tokyo) and Ikumasa Koshiro (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrolytic smelting system includes: an electrolytic smelting furnace including a furnace body to which a molten ore is introduced, a cathode substrate which is installed on a bottom portion in the furnace body, and an anode substrate which is positioned above the cathode substrate in the furnace body; an inert gas circulation unit including a circulation line to recover an inert gas supplied into the electrolytic smelting ...