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:
Oct. 18, 2022
Filed:
Apr. 30, 2020
Sumitomo Electric Industries, Ltd., Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
An optical fiber comprises a glass fiber comprising a core and a cladding, and a coating resin layer covering the outer periphery of the glass fiber, wherein the coating resin layer has a primary resin layer being in contact with the glass fiber and covering the glass fiber and a secondary resin layer covering the outer periphery of the primary resin layer, the secondary resin layer comprises hydrophobic spherical silica particles, and the content of the silica particles is 7% by mass or more and 60% by mass or less based on the total amount of the secondary resin layer, and the absolute value of the surface potential of the optical fiber is 10 mV or more and 60 mV or less.