US Patent Issued to Masercata on Sept. 22 for "Direct current electric arc furnace" (Finnish Inventor)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,218, issued on Sept. 22, was assigned to Masercata Oy (Turenki, Finland).

"Direct current electric arc furnace" was invented by Matti Hurtta (Turenki, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for extracting metal from metal-containing raw material in a batch process by using a direct current electric arc furnace having one or more than one top electrode and at least one bottom electrode, wherein the method comprises the following steps: adding the metal-containing raw material to the furnace, thereby obtaining a loaded bath, moving the top electrode(s) on to the raw material, heating the loaded bath i...