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:
Feb. 03, 2009
Filed:
May. 18, 2004
Yuichi Ohga, Yokohama, JP;
Masashi Onishi, Yokohama, JP;
Osamu Kasuu, Yokohama, JP;
Shuichiro Kato, Yokohama, JP;
Toru Adachi, Yokohama, JP;
Takashi Sasaki, Yokohama, JP;
Masaaki Hirano, Yokohama, JP;
Yuichi Ohga, Yokohama, JP;
Masashi Onishi, Yokohama, JP;
Osamu Kasuu, Yokohama, JP;
Shuichiro Kato, Yokohama, JP;
Toru Adachi, Yokohama, JP;
Takashi Sasaki, Yokohama, JP;
Masaaki Hirano, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A core rod is inserted into a cladding pipe, moisture in a space between the core rod and the cladding pipe is removed, and an optical fiber is drawn while the space is connected to a dry-gas atmosphere and/or being decompressed and while the core rod and the cladding pipe are being unified with each other. Alternatively, the core rod is inserted into the cladding pipe, and an optical fiber is drawn from one end while moisture on the surface of the core rod and the internal surface of the cladding pipe is being removed. Accordingly, a high quality optical fiber is manufactured with good productivity.