ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,774, issued on June 23, was assigned to Jiangsu Xingda Steel Tyre Cord Co. Ltd. (China).
"Method for producing layered steel cord" was invented by Chenlu Zhu (Taizhou, China), Zifei Ni (Taizhou, China), Shoupeng Kou (Taizhou, China) and Na Li (Taizhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for producing a layered steel cord and belongs to the technical field of steel cord production. The method includes: prestressing some of steel filaments in each layer other than a core wire to obtain prestressed steel filaments; and arranging conventional steel filaments and the prestressed steel filaments in each layer alterna...