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:
Jun. 12, 2012
Filed:
Aug. 01, 2005
Mitsuo Saitou, Gunma, JP;
Koichi Shiomoto, Gunma, JP;
Mitsuji Sato, Ibaraki, JP;
Shoji Hoshino, Ibaraki, JP;
Seiya Yamada, Gunma, JP;
Hiroshi Kato, Osaka, JP;
Naomichi Osada, Kanagawa, JP;
Mitsuo Saitou, Gunma, JP;
Koichi Shiomoto, Gunma, JP;
Mitsuji Sato, Ibaraki, JP;
Shoji Hoshino, Ibaraki, JP;
Seiya Yamada, Gunma, JP;
Hiroshi Kato, Osaka, JP;
Naomichi Osada, Kanagawa, JP;
Shin-Etsu Chemical Co., Ltd., Chiyoda-ku, Tokyo, JP;
Abstract
Provided are a manufacturing method of an optical fiber base material and an optical fiber base material manufactured in the manufacturing method, the manufacturing method including: a process of combining at least two core base materialsby fusion-bonding to produce a single core base material; a process of fusion-bonding a pair of dummy glass rodsandat both ends of the core base materialto produce a starting glass rod; a process of depositing, at an outer surface of the starting glass rod, glass particles generated by flame hydrolysis, to produce a porous base material; and a process of sintering and vitrifying, into transparent glass, the porous base material, to produce an optical fiber base materialthat includes a core portion and a clad portion.