ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,487, issued on March 31, was assigned to Korea Institute of Science and Technology (Seoul, South Korea).

"Robot arm" was invented by Yongseok Ihn (Seoul, South Korea), Yunseong Na (Seoul, South Korea), Donghyun Hwang (Seoul, South Korea) and Sungwook Yang (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A robot arm according to the present disclosure comprises a motor portion; a support connected to the motor portion; first and second links connected to the motor portion and movable in a vertical direction; a first gimbal coupled to upper ends of the first and second links, respectively; third and fourth links coupled to the first...