US Patent Issued to SUMITOMO ELECTRIC INDUSTRIES on April 14 for "Optical fiber" (Japanese Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,871, issued on April 14, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Optical fiber" was invented by Takahiro Nomura (Osaka, Japan), Kazuyuki Sohma (Osaka, Japan), Yudai Watanabe (Osaka, Japan) and Iwao Okazaki (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The optical fiber includes a glass fiber and a coating resin layer. The coating resin layer includes a primary resin layer and a secondary resin layer. The glass fiber has an outer diameter of from 124 micro metre to 126 micro metre. The secondary resin layer has an outer diameter of from 145 micro metre to 170 micro metre. The primary resin layer has an in si...