US Patent Issued to BEIJING INSTITUTE OF TECHNOLOGY on Feb. 4 for "Carbide-free tempered martensitic steels and preparation methods thereof" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,404, issued on Feb. 4, was assigned to BEIJING INSTITUTE OF TECHNOLOGY (Beijing).

"Carbide-free tempered martensitic steels and preparation methods thereof" was invented by Zhiping Xiong (Beijing), Dezhen Yang (Beijing), Chao Zhang (Beijing), Hao Zhang (Beijing) and Xingwang Cheng (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The embodiments of the present disclosure provide a carbide-free tempered martensitic steel and a preparation method thereof. The carbide-free tempered martensitic steel includes a martensite matrix without carbide and a retained austenite distributed between the martensite matrix obtained after tempering or partitioni...