ALEXANDRIA, Va., March 17 -- United States Patent no. 12,579,402, issued on March 17, was assigned to KONA M Co. LTD. (Jincheon-gun, South Korea).
"Metal IC card with improved antenna characteristics and manufacturing method for metal IC card" was invented by Young Hoon Jeong (Seosan-si, South Korea), Ki Sung Nam (Jincheon-gun, South Korea) and Dong Gu Kim (Ansan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Proposed is a wireless IC card having a wireless IC chip and a metal body. The wireless IC card includes an IC chip accommodating portion having an opening and being provided to accommodate the IC chip, a slit portion formed from a first side of the accommodating portion toward an outer ...