US Patent Issued to JFE Steel on April 14 for "Radiant tube burner, radiant tube, and method of designing radiant tube burner" (Japanese Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,476, issued on April 14, was assigned to JFE Steel Corp. (Tokyo).

"Radiant tube burner, radiant tube, and method of designing radiant tube burner" was invented by Tomoyuki Kawashima (Tokyo), Akihiro Kobayashi (Tokyo) and Noriko Ozawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A radiant tube burner, wherein an opening cross section of the tube is virtually divided into four areas with two straight lines as boundaries, the two straight lines being obtained by tilting a minor axis of the oval, which is a shape of the opening cross section, by plus-minus45deg with a center of the oval as a center, and a flow rate of primary combustion air in...