US Patent Issued to Fujikura on July 21 for "Optical fiber cable" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,688, issued on July 21, was assigned to Fujikura Ltd. (Tokyo).

"Optical fiber cable" was invented by Okimi Mukai (Sakura, Japan), Ken Osato (Sakura, Japan) and Akira Namazue (Sakura, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical fiber cable includes optical fibers, a wrapping tube that wraps around the optical fibers and contacts outermost ones of the optical fibers, and a sheath that covers the wrapping tube and has recesses on an inner circumferential surface of the sheath. The recesses are recessed toward a radially outer side of the optical fiber cable such that a space exists between the wrapping tube and the sheath in each of...