ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,235, issued on Sept. 22, was assigned to Electronics and Telecommunications Research Institute (Daejeon, South Korea).

"Optical integrated device and manufacturing method of the same" was invented by O-Kyun Kwon (Daejeon, South Korea), Namje Kim (Daejeon, South Korea), Ho Sung Kim (Daejeon, South Korea), Miran Park (Daejeon, South Korea), Seungchul Lee (Daejeon, South Korea) and Won Seok Han (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method of manufacturing an optical integrated device. The method includes forming a lower clad layer on a substrate, forming a plurality of mask patterns arranged in one directio...