US Patent Issued to NEC on Sept. 23 for "Water pressure fluctuation measuring system and water pressure fluctuation measuring method" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,316, issued on Sept. 23, was assigned to NEC Corp. (Tokyo).

"Water pressure fluctuation measuring system and water pressure fluctuation measuring method" was invented by Yutaka Yano (Tokyo) and Eitaro Misumi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A water pressure fluctuation measuring system detects a water pressure fluctuation. A cable, which includes an optical fiber, is provided on or in the ground of the seabed in such a way that the optical fiber is expanded and contracted according to the water pressure fluctuation. An optical output unit outputs monitoring light to the optical fiber. A partial reflection unit is provided on a ...