ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,669, issued on Dec. 16, was assigned to Hyundai Steel Co. (Incheon, South Korea).
"Ultra-high-strength reinforcing bar and manufacturing method thereof" was invented by Jun Ho Chung (Incheon, South Korea), Ju Sang Lee (Incheon, South Korea), Rok Seok Kim (Incheon, South Korea) and Chung Yeob Lee (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an ultra-high-strength reinforcing bar and a method for manufacturing the same are disclosed. In an exemplary embodiment, the ultra-high-strength reinforcing bar includes an amount of 0.10 to 0.45 wt % carbon (C), an amount of 0.5 to 1.0 wt % silicon (Si), an amount of 0.40 to 1...