ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,795, issued on Dec. 30, was assigned to SABERT (ZHONGSHAN) Ltd. (Guangdong, China).

"Composite thermoformed tableware and preparation method thereof" was invented by Kam Yiu Wong (Zhongshan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite thermoformed tableware and preparation method thereof. The preparation method involves a preheating step, a compositing step and a thermoforming step in sequence; the preheating step heats multilayer forming materials at a temperature of 35deg C. to 150deg C., the forming materials have one or at least two of paper, plastic and inorganic layer; the compositing step involves stacking the preheated f...