ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,823, issued on Oct. 21, was assigned to Polaris3D Co. Ltd. (Pohang-si, South Korea).

"Method and system for loading trays in delivery robots within a multi-story building" was invented by Hakjun Lee (Pohang-si, South Korea), Jaeyoung Hong (Pohang-si, South Korea), Myeonggeun Park (Pohang-si, South Korea) and Suyeong Park (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a delivery robot for providing delivery services, wherein the delivery robot includes a communication unit and one or more processors, and the one or more processors are configured to obtain delivery object information and delive...