ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,439,512, issued on Oct. 7, was assigned to SAMSUNG ELECTRO-MECHANICS Co. LTD. (Suwon-si, South Korea).
"Printed circuit board" was invented by Jin Uk Lee (Suwon-si, South Korea), Sangik Cho (Suwon-si, South Korea), Chi Won Hwang (Suwon-si, South Korea) and Eun Sun Kim (Suwon-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A printed circuit board includes a first insulating layer, a first conductor-pattern layer disposed on one surface of the first insulating layer, a first recess formed in the other surface of the first insulating layer opposing one surface of the first insulating layer, a second conductor-pattern layer disposed in the fir...