ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,267, issued on Sept. 8, was assigned to GUANGDONG EONJOY TECHNOLOGY Ltd. (Foshan, China).
"Block sponge and production process thereof" was invented by Jianeng Cui (Foshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A block sponge and a production process thereof are provided. By optimizing proportions of raw materials and the production process, problems of poor antibacterial property, poor adsorption capacity, insufficient resilience and poor long-term stability of an existing block sponge are solved. Copper ion powder and green tea powder are compounded to achieve broad-spectrum antibacterial (inhibition rateless than=95%). Bamboo charc...