ALEXANDRIA, Va., June 2 -- United States Patent no. 12,647,752, issued on June 2, was assigned to INVENTIS Co. LTD. (Seoul, South Korea).

"Realtime indoor positioning method using artificial magnetic field generation and system thereof" was invented by Hoontack Oh (Seongnam-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to an embodiment of the present disclosure, an indoor positioning system may include a magnetic field generation device configured to periodically generate an artificial magnetic field and propagate the artificial magnetic field to an indoor space through a conducting wire, a control device configured to adjust characteristics of the artificial magnetic field, contro...