ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,311, issued on Dec. 9, was assigned to DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY (Daegu, South Korea).

"Drug delivery device" was invented by Suk Ho Park (Gwangju, South Korea), Ji Hun Lee (Busan, South Korea) and Seung Un Yang (Daegu, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drug delivery device according to an embodiment may include a body including an opening; a magnetic element disposed in the body; a reservoir disposed in the body, connected to the magnetic element, and configured to store a drug; and an opening/closing structure coupled to the body and configured to open or close the opening."

The patent was filed...