US Patent Issued to Sumitomo Osaka Cement, Naitonal Institute of Information and Communications Technology on Dec. 23 for "Optical waveguide element, optical waveguide device, and optical transmission apparatus" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,656, issued on Dec. 23, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo) and Naitonal Institute of Information and Communications Technology (Tokyo).

"Optical waveguide element, optical waveguide device, and optical transmission apparatus" was invented by Shingo Takano (Tokyo), Yu Kataoka (Tokyo), Satoshi Oikawa (Tokyo), Junichiro Ichikawa (Tokyo), Yuya Yamaguchi (Tokyo), Atsushi Kanno (Tokyo), Naokatsu Yamamoto (Tokyo) and Tetsuya Kawanishi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical waveguide element includes a substrate, an optical waveguide disposed inside the substrate or on the substrate, and an electrode provided al...