US Patent Issued to NIPPON STEEL on July 28 for "Hot-stamp formed body" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,585, issued on July 28, was assigned to NIPPON STEEL Corp. (Tokyo).

"Hot-stamp formed body" was invented by Shingo Fujinaka (Tokyo) and Hitomi Nishibata (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hot-stamp formed body has a predetermined chemical composition and has a microstructure including, by area ratio, martensite: 90% to 100% and a remainder in the microstructure: 0% to 10%. The percentage of martensite having a GAIQ value of 40000 or less in all of the martensite is less than 5.0%, an average grain size of prior austenite grains is 6.0 micro metre or less, and a standard deviation of grain sizes of the prior austenite grains is 2...