ALEXANDRIA, Va., March 5 -- United States Patent no. 12,240,670, issued on March 4, was assigned to Wuxi Lead Intelligent Equipment Co. Ltd. (Jiangsu, China).
"Sealing box and standing device" was invented by Jianglian Xiao (Jiangsu, China) and Yizhou Sun (Jiangsu, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sealing box and a standing device are disclosed. The sealing box includes an upper cover; a lower cover which is detachably connected to the upper cover and encloses with the upper cover to form an accommodating chamber, and defines a sealing groove toward the upper cover and an inflation hole capable of inflating airflow into the sealing groove; and an elastic sealing ring which includes a se...