ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,255, issued on June 3, was assigned to HYUNDAI MOBIS Co. LTD. (Seoul, South Korea).

"Piston pump for brake system" was invented by Young Chang Choi (Yongin-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to at least one aspect, the present disclosure provides a piston pump comprising: a piston unit configured to reciprocate by driving of a motor cam; a sleeve unit disposed to surround at least a part of the piston unit and having a space in which brake oil is stored; and a check valve unit facing the sleeve unit and discharging the brake oil to an outside of the sleeve unit when a pressure of the brake oil increases, wherein ...