The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2014
Filed:
Jan. 24, 2014
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Tetsuya Nakanishi, Yokohama, JP;
Masaaki Hirano, Yokohama, JP;
Tetsuya Haruna, Yokohama, JP;
Maki Ikeji, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Abstract
An optical fiber having excellent strength that can be manufactured at low cost, as well as a method for making such optical fiber, is provided. An optical fiberis a silica-based optical fiber comprising a core, an optical claddingsurrounding the core, and a jacketing regionsurrounding the optical claddingand having a uniform composition throughout from the internal circumference to the outer circumference. A compressive strained layer having a residual compressive stress is provided at the outermost circumference of the jacketing region