ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,229, issued on Nov. 25, was assigned to KONA M Co. LTD. (Chungcheongbuk-do, South Korea).
"Card with 3D pattern and manufacturing method thereof" was invented by Joung Hyun Choi (Chungcheongbuk-do, South Korea), Ki Sung Nam (Chungcheongbuk-do, South Korea), Young Hoon Jeong (Seosan-si, South Korea) and Jae Min Yang (Chungcheongbuk-do, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to an embodiment of the present disclosure, a method of manufacturing a card by using a card manufacturing device includes the steps of: forming an adhesive layer on a body plate made of a metal material having a preset first surface roughness; perfor...