ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,793, issued on Aug. 19, was assigned to Shijiazhuang Hipro Biotechnology Co. Ltd. (Hebei, China).
"Test kit" was invented by Shushun Hao (Hebei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A test kit comprising an annular magnet (2), a ball (3), a magnetic bar (4), an electromagnetic coil (5), a box body (6), an air inlet (7), a liquid outlet pipe (8) and a sealing gasket (9), wherein the liquid outlet pipe (8) is located on the bottom face of the box body (6), the top of the liquid outlet pipe (8) is fixed to the box body (6), the cylindrical magnetic bar (4) is arranged in the middle of the liquid outlet pipe (8), the bottom of the magnet...