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:
Sep. 17, 2019
Filed:
Feb. 08, 2017
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Keisuke Okada, Yokohama, JP;
Fumiaki Sato, Yokohama, JP;
Yoshiaki Nagao, Yokohama, JP;
Nobuyuki Suzuki, Yokohama, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka-shi, Osaka, JP;
Abstract
An optical fiber cable includes optical fiber ribbons of no less than 12, a slot rod including slot grooves in which the optical fiber ribbons are housed, a tension member, and a cable sheath. The optical fiber ribbons include, at a part of or through all of the optical fiber core wires, in a state where the optical fiber core wires are arranged in parallel, a connecting part where adjacent optical fiber core wires are connected and a non-connecting part where adjacent optical fiber core wires are not connected, which are provided intermittently in a longitudinal direction. A relationship between the number 'x' of the optical fiber core wires housed in the optical fiber cable and flexural rigidity 'y' (N·mm) of the optical fiber cable satisfies following Expression 1.y≤3e  (Expression 1)