ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,120, issued on Nov. 11, was assigned to POSCO (Pohang-si, South Korea).
"Enamel steel sheet and manufacturing method therefor" was invented by Jai-Ik Kim (Pohang-si, South Korea) and Hyun-Seok Ko (Pohang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is an enamel steel sheet comprising by wt %, 0.01 to 0.05% of C, 0.46 to 0.80% of Mn, 0.001 to 0.03% of Si, 0.01 to 0.08% of Al, 0.001 to 0.02% of P, 0.001 to 0.02% of S, 0.004% or less (excluding 0%) of N, 0.003% or less (excluding 0%) of O, and the balance of Fe and inevitable impurities. The enamel steel sheet may include an oxide layer from the surface to the inner d...