ALEXANDRIA, Va., June 25 -- United States Patent no. 12,336,939, issued on June 24, was assigned to HYUNDAI MOTOR COMPANY (Seoul, South Korea) and KIA Corp. (Seoul, South Korea).

"Ramp system of vehicle" was invented by Hyun Woo Lee (Hwaseong-si, South Korea), Ji Soo Byun (Suwon-si, South Korea), Sung Min You (Gimje-si, South Korea) and Se Hoon Kim (Gimje-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ramp system is disclosed. The ramp system is configured to move a step disposed in a frame between a ramp closed position and a ramp open position along a moving direction. The ramp system may include a driving device generating driving torque and transmitting the driving torque to the step to...