US Patent Issued to Sumitomo Osaka Cement on Sept. 1 for "Optical waveguide device, and optical modulation device and optical transmission apparatus using same" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,298, issued on Sept. 1, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical waveguide device, and optical modulation device and optical transmission apparatus using same" was invented by Kosuke Okahashi (Tokyo) and Shingo Takano (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide an optical waveguide device that prevents peeling of an optical waveguide substrate and that suppresses a propagation loss of a light wave of an optical waveguide.An optical waveguide device of the present invention includes an optical waveguide substrate 1 on which an optical waveguide 10 is formed, a reinforc...