ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,698, issued on Nov. 11, was assigned to Kubota Corp. (Osaka, Japan).
"Thermal cracking tube with fluid agitating element" was invented by Motoyuki Matsubara (Hirakata, Japan) and Kunihide Hashimoto (Hirakata, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a thermal cracking tube having the effect of agitating a fluid in the tube and capable of preventing overheating due to the generation of laminar flow, wherein the thermal cracking tube 10 has an agitating element 20 formed on and projecting inwardly from an inner surface of the tube, wherein the fluid agitating element comprises a fin 21 extending along the inn...