ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,537, issued on Feb. 3, was assigned to WAGSTAFF INC. (Spokane Valley, Wash.).
"Material, apparatus, and method for refractory castings" was invented by Nicholas Ryan Tebbe (Spokane Valley, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided herein is a system, apparatus, and method for producing refractory products, and more particularly, to producing heated refractories, passive refractories, transition plates, moldable refractories, and accessories such as heated spouts, heated pins, thimbles, and dams. A heated refractory channel as disclosed herein may include a working surface to contain molten metal within the channel; a core adjacent...