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.

Date of Patent:
Jul. 21, 2026

Filed:

Apr. 20, 2022
Applicant:

Fujikura Ltd., Tokyo, JP;

Inventors:

Okimi Mukai, Sakura, JP;

Ken Osato, Sakura, JP;

Akira Namazue, Sakura, JP;

Assignee:

Fujikura Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/44 (2006.01);
U.S. Cl.
CPC ...
G02B 6/4432 (2013.01); G02B 6/443 (2013.01); G02B 6/4435 (2013.01); G02B 6/4403 (2013.01); G02B 6/4438 (2013.01); G02B 6/4485 (2013.01); G02B 6/449 (2013.01);
Abstract

An optical fiber cable includes optical fibers, a wrapping tube that wraps around the optical fibers and contacts outermost ones of the optical fibers, and a sheath that covers the wrapping tube and has recesses on an inner circumferential surface of the sheath. The recesses are recessed toward a radially outer side of the optical fiber cable such that a space exists between the wrapping tube and the sheath in each of the recesses.


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