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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.:

US 5320658 B1

PDFFull Text
Date of Patent:
Jun. 14, 1994

Filed:

Aug. 03, 1992

Process of drawing optical fiber

Applicant:
Inventors:

Yuichi Ohga, Yokohama, JP;

Shinji Ishikawa, Yokohama, JP;

Hiroo Kanamori, Yokohama, JP;

Ichiro Yoshimura, Yokohama, JP;

Horoshi Yokota, Yokohama, JP;

Assignee:

Sumitomo Electric Industries, Ltd., Osaka, JP;

Attorney:

Cushman, Darby & Cushman

Primary Examiner:

Robert L Lindsay

Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65-311 ; 65 325 ;
Abstract

There is provided a process of melt drawing an optical fiber from a preform therefor in which a heating furnace comprising a muffle tube inside thereof through which the optical fiber is passed is provided immediately below a melt drawing furnace to further draw the optical fiber while heated, and an interior of the muffle tube is kept in an atmosphere selected from the group consisting of an inert atmosphere, an atmosphere comprising oxygen gas and an atmosphere comprising hydrogen gas.

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Ohga, Yuichi. (1994). Process of drawing optical fiber (U.S. Patent No. 5320658). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5320658

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