ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,580, issued on Dec. 23, was assigned to Foshan Zhuo Yingda Plastic Co. Ltd (Foshan, China).
"Membrane structure for integrated production of water ball" was invented by Zhuokai Zhang (Foshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A membrane structure for integrated production of a water ball is disclosed, including an integrated membrane, wherein the integrated membrane includes a membrane body portion and a pocket body portion, and a pocket body tear line is arranged between the membrane body portion and the pocket body portion; and the membrane body portion is provided with a water injection channel, and a one-way water inlet is arr...