ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,217, issued on Feb. 18, was assigned to SHENZHEN UNIVERSITY (Guangdong, China).
"Magnetic pressure retaining control device" was invented by Heping Xie (Shenzhen, China), Mingzhong Gao (Shenzhen, China), Guikang Liu (Shenzhen, China), Ling Chen (Shenzhen, China), Bo Yu (Shenzhen, China), Cong Li (Shenzhen, China), Chenghang Fu (Shenzhen, China), Jianjun Hu (Shenzhen, China), Mingqing Yang (Shenzhen, China), Nianhan Wu (Shenzhen, China) and Zhiqiang He (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a magnetic pressure retaining control device, which comprises: a valve seat, a magnetic valve cover, and a trigger magnetic ...