US Patent Issued to SUMITOMO ELECTRIC INDUSTRIES on May 19 for "Optical fiber unit and optical cable" (Japanese Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,839, issued on May 19, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Optical fiber unit and optical cable" was invented by Takemasa Akiyama (Osaka, Japan) and Fumiaki Sato (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical fiber unit includes: a plurality of optical fibers; and a tube covering the plurality of optical fibers. In the optical fiber unit, a tensile elongation rate of the tube is 100% or more and 500% or less. An optical cable includes: a plurality of optical fiber units; and a cable sheath covering the plurality of optical fiber units. In the optical cable, each of the plurality of optical fiber...