ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,146, issued on Jan. 20, was assigned to Jun Chen (Shanghai) and Shanghai Mingjie Chem-Technologies Co. Ltd. (Shanghai).
"Pretreatment method of aluminum alloy coil" was invented by Jun Chen (Shanghai), Jie Chen (Shanghai), Conglin Xia (Shanghai) and Ruijie Mao (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to the technical field of aluminum alloy surface treatment, in particular to the technical field of IPC C23C, and more specifically to a pretreatment method of an aluminum alloy coil. The invention can improve adhesion of an adhesive and weldability of an aluminum alloy at the same time through a specific pretreatme...