ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,331, issued on Nov. 4, was assigned to Q-CARBON MATERIAL Co. LTD. (Shanghai).
"Right-angle needle-punching mechanisms and needle-punching devices" was invented by Fuqiang Shen (Shanghai) and Yalin Sun (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A right-angle needle-punching mechanism and a needle-punching device are provided. The right-angle needle-punching mechanism includes a first right-angle needle-punching assembly and a second right-angle needle-punching assembly, a position adjusting assembly configured to drive the first right-angle needle-punching assembly and the second right-angle needle-punching assembly approach or move away...