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:
May. 19, 2026
Filed:
Feb. 01, 2024
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventors:
Takemasa Akiyama, Osaka, JP;
Fumiaki Sato, Osaka, JP;
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/44 (2006.01);
U.S. Cl.
CPC ...
G02B 6/443 (2013.01);
Abstract
An optical fiber unit includes: a plurality of optical fibers; and a tube covering the plurality of optical fibers. In the optical fiber unit, a tensile elongation rate of the tube is 100% or more and 500% or less. An optical cable includes: a plurality of optical fiber units; and a cable sheath covering the plurality of optical fiber units. In the optical cable, each of the plurality of optical fiber units includes: a plurality of optical fibers; and a tube covering the plurality of optical fibers, and a tensile elongation rate of the tube is 100% or more and 500% or less.