ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,867, issued on March 18, was assigned to CANATURE HEALTH TECHNOLOGY GROUP Co. LTD. (China).

"Liner structure and blow-molding manufacturing method forliner structure" was invented by Xiaogong Chen (Shanghai), Lei Fan (Shanghai), Tong Liu (Shanghai) and Mingche Zhou (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liner structure includes a liner main body and an insert located inside an opening of the liner main body. The liner main body is made of a polybutylene material. The liner structure has relatively good heat resistance within a temperature range corresponding to conventional liquid water, and can be used for containing hot water....