ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,651, issued on March 25, was assigned to NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS (Nanjing, China).

"Welding method for high-strength welding wire based on nanoparticle implantation and trace element compensation" was invented by Xiaohong Zhan (Nanjing, China), Jianfeng Wang (Nanjing, China), Yue Li (Nanjing, China) and Yanqiu Zhao (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A high-strength welding wire includes, in weight percentage, 5.8% Cu, 0.2% Mn, 0.1% V, 0.2% Zr, 0.2% Si, 0.3% Fe, 0.1% Zn, 1.4% compensation element, 0.2% hydrogen evolution element, 1.2% nanoceramic particle, and Al for the balance. Various powdere...