ALEXANDRIA, Va., July 23 -- United States Patent no. 12,368,517, issued on July 22, was assigned to Nippon Telegraph and Telephone Corp. (Tokyo).

"Optical power supply system, power receiving side optical communication device and power supply method" was invented by Kenta Ito (Musashino, Japan), Hiroaki Katsurai (Musashino, Japan) and Tomoaki Yoshida (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply side optical communication apparatus supplies power to a power receiving side optical communication apparatus using an optical signal. A power storage unit stores the supplied power. A data control unit superimposes data control information related to transmission/reception of data t...