ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,097, issued on Jan. 20, was assigned to YONWOO Co. LTD. (Incheon, South Korea).
"Pump assembly" was invented by Seong Ung Choe (Incheon, South Korea) and Tae Yong Kim (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pump assembly includes a cylinder open on top and bottom thereof and having a hollow portion formed therein and a first wing protruding outward from the outer peripheral surface of top thereof, a sealing part having at least a portion thereof inserted into the cylinder to at least partly seal the upper peripheral surface of the cylinder and a second wing protruding outward from the outer peripheral surface of the to...