ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,670, issued on Dec. 16, was assigned to NEC Corp. (Tokyo).

"Submarine optical cable system" was invented by Yoshinari Takigawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "In order to improve the flexibilities of structures to be added, a submarine optical cable system according to the present invention comprises a first switching device connected to a first land station by means of a first submarine optical cable, a second switching device connected to a second land station by means of a second submarine optical cable, and a third submarine optical cable connected to the first switching device and to the second switching device, wherein th...