ALEXANDRIA, Va., June 25 -- United States Patent no. 12,336,637, issued on June 24, was assigned to Wuzhou Baofeng Plastic Products Co. Ltd. (Wuzhou, China).
"Inflatable sponge mat" was invented by Bo Zhong (Wuzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses an inflatable sponge mat, including a top sheet, a bottom sheet, a side enclosing sheet and a bed mat, wherein four edges of the top sheet are connected to the top of the side enclosing sheet, four edges of the bottom sheet are connected to the bottom of the side enclosing sheet; the top sheet, the bottom sheet and the side enclosing sheet enclose to form an air chamber, the bed mat is arranged in the air chamb...