ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,576, issued on Feb. 17, was assigned to ZHEJIANG SOWINPAK Co. LTD. (Wenzhou, China).
"Anti-leakage paper containers" was invented by Mingxi Cai (Wenzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present disclosure provide an anti-leakage paper container, comprising a container wall and a container bottom. A lower end of the container wall is connected with the container bottom. The container wall is composed of a connecting cardboard. The connecting cardboard includes a first side and a second side. The first side and the second side lap each other to form a cylinder, and the first side is located on an inner side of t...