US Patent Issued to Sumitomo Osaka Cement on Feb. 24 for "Optical waveguide element, optical modulation device using optical waveguide element, and optical transmission device using optical waveguide element" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,759, issued on Feb. 24, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical waveguide element, optical modulation device using optical waveguide element, and optical transmission device using optical waveguide element" was invented by Junji Arai (Tokyo), Yumi Murata (Tokyo) and Yuki Kugimoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an optical waveguide element whereby it is possible to prevent dropout of an optical component due to internal stress that occurs in a joint between the optical component and an optical waveguide member including a substrate on which an optical waveguide is formed, and to simplify a m...