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:
Jan. 01, 2019
Filed:
Jul. 18, 2016
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventor:
Nobuo Oozeki, Sakura, JP;
Assignee:
FUJIKURA LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C23C 4/11 (2016.01); C23C 4/129 (2016.01); G02B 1/10 (2015.01); G02B 6/02 (2006.01);
U.S. Cl.
CPC ...
C23C 4/129 (2016.01); C23C 4/11 (2016.01); G02B 1/10 (2013.01); G02B 6/02 (2013.01);
Abstract
Provided is a method for manufacturing an optical fiber preform. In a premixing step, a source-material-containing gas containing organosilicon is mixed with premix-use oxygen gas so as to obtain a premixed source material gas. In the premixing step, the premix-use oxygen gas has a temperature greater than or equal to a liquefaction temperature of the organosilicon, the liquefaction temperature being determined depending on an amount of the organosilicon contained in the premixed source material gas.