ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,859, issued on April 15, was assigned to DAEGU GYEONGBUK INSTITUE OF SCIENCE AND TECHNOLOGY (Daegu, South Korea).

"Drug delivery device and manufacturing method thereof" was invented by So Hee Kim (Daegu, South Korea), Hyun Min Moon (Daegu, South Korea) and Nam Sun Chou (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drug delivery device and a method for manufacturing the same, and more specifically, a drug delivery device that can deliver a drug to a biological tissue while minimizing damage thereto and can come into close contact with the biological tissue to be able to measure an electrical signal of or apply electrical stimul...