ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,681, issued on March 18, was assigned to NEC Corp. (Tokyo).

"Optical transmission/reception device, optical communications system and optical transmission/reception method" was invented by Hiroshi Yamamoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Even in a case where light sources at an optical transmission-side and an optical reception-side are made into a common light source, a optical transmission function and an optical reception function are enabled to be used at a time.An optical transmission/reception device according to the present invention includes optical split means for splitting the light from the optical output means into...