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:
Apr. 11, 2006
Filed:
Mar. 14, 2003
Applicants:
Fumio Sato, Moriyama, JP;
Akihiko Sakamoto, Shiga, JP;
Inventors:
Fumio Sato, Moriyama, JP;
Akihiko Sakamoto, Shiga, JP;
Assignee:
Nippon Electric Glass Co., Ltd., Otsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 22/00 (2006.01); B29D 23/00 (2006.01); B32B 1/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a glass preform () to be subjected to fiber-drawing, use is made of a cylindrical glass tube () whose one end in an axial direction is sealed. A plurality of glass capillaries () extend in the glass tube in the axial direction. The glass capillaries are fused to one another into an integral structure. The glass capillaries have air holes periodically arranged on a plane perpendicular to the axial direction, respectively.