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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 4323381 B1

PDFFull Text
Date of Patent:
Apr. 06, 1982

Filed:

Jul. 17, 1980

Method for producing mother rods for optical fibers

Applicant:
Inventors:

Iwao Matsuyama, Sagamihara, JP;

Kenzo Susa, Hinodemachi, JP;

Tsuneo Suganuma, Tokorozawa, JP;

Shin Satoh, Iruma, JP;

Toshio Katsuyama, Kokubunji, JP;

Hidehito Obayashi, Tokyo, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch

Primary Examiner:

Arthur D Kellogg

Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 32 ; 65 22 ; 65134 ; 501 12 ; 252317 ;
Abstract

A process for producing a mother rod useful for the production of an optical fiber which comprises hydrolyzing a silicon alkoxide to prepare a gel of a desired shape, and drying and sintering the gel to produce a block made of a silica glass. The process has the advantages that it is well adapted for mass-production, that a glass made of a B.sub.2 O.sub.3 --SiO.sub.2 system may be produced thereby and that a glass block of arbitrary shape may be readily produced.

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Matsuyama, Iwao. (1982). Method for producing mother rods for optical fibers (U.S. Patent No. 4323381). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4323381

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