US Patent Issued to Sumitomo Osaka Cement on June 3 for "Optical modulator and optical transmission device using same" (Japanese Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,321,047, issued on June 3, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical modulator and optical transmission device using same" was invented by Kei Kato (Tokyo) and Hideki Ichimei (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical modulator that suppresses poor welding between a case main body and a lid portion is provided. There is provided an optical modulator including: a case that is a rectangular parallelepiped and accommodates at least an optical waveguide element, in which the case includes a case main body 1 in which one surface of the rectangular parallelepiped forms an opening portion, and a lid portion 2 that ha...