US Patent Issued to NEC on July 28 for "Submarine optical communication system" (Japanese Inventor)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,695,517, issued on July 28, was assigned to NEC Corp. (Tokyo).

"Submarine optical communication system" was invented by Ryu Kurahashi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A submarine optical communication system comprising a first terminal station, a second terminal station, a third terminal station, a first branching device, and a first branching/insertion device, wherein the first and second terminal stations transmit each of first and second control signals in a control wavelength band at different times from each other in order to transmit control signals from the plurality of terminal stations to the first branching device and the ...