US Patent Issued to NIPPON STEEL on April 22 for "Hot dip galvanized steel sheet and method for producing same" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,392, issued on April 22, was assigned to NIPPON STEEL Corp. (Tokyo).

"Hot dip galvanized steel sheet and method for producing same" was invented by Takafumi Yokoyama (Tokyo), Hiroyuki Kawata (Tokyo), Kunio Hayashi (Tokyo), Yuji Yamaguchi (Tokyo) and Satoshi Uchida (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a hot dip galvanized steel sheet comprising a base steel sheet wherein the base steel sheet has a predetermined chemical composition, and contains ferrite: 50% or less, retained austenite: 30% or less, tempered martensite: 5% or more, fresh martensite: 10% or less, and pearlite and cementite in total: 5% or less, remaining s...