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:
Oct. 25, 2016
Filed:
Jan. 09, 2013
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Tadashi Enomoto, Yokohama, JP;
Iwao Okazaki, Yokohama, JP;
Takashi Yamazaki, Yokohama, JP;
Masatoshi Hayakawa, Yokohama, JP;
Manabu Shiozaki, Yokohama, JP;
Norihiro Uenoyama, Yokohama, JP;
Masaru Furusyou, Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka-shi, Osaka, JP;
Abstract
An apparatus includes a susceptor and a protective pipe. A gas containing 50% or more of argon or nitrogen is used as a gas to be supplied into the susceptor. The protective pipe has a heat insulating region () enclosed with a heat insulator () with a length of Db (mm) at the upper section thereof and a non-heat insulating region () not enclosed with any heat insulators at the lower section thereof. The temperature of the glass fiber at the outlet of the protective pipe becomes 1700° C. or less. The outer diameter of the glass fiber at the outlet of the protective pipe is within a range of the target outer diameter of the glass fiber+6 μm or less.