US Patent Issued to SUMITOMO ELECTRIC INDUSTRIES on Dec. 2 for "Optical fiber" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,397, issued on Dec. 2, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Optical fiber" was invented by Takahiro Nomura (Osaka, Japan), Kazuyuki Sohma (Osaka, Japan), Keisei Morita (Osaka, Japan) and Takahiro Saito (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical fiber includes a glass fiber and a coating resin layer surrounding the outer periphery of the glass fiber. The coating resin layer has a primary resin layer that surrounds the outer periphery of the glass fiber, and a secondary resin layer that surrounds the outer periphery of the primary resin layer. The primary resin layer has a thickness of 7.5 micr...