Glass preform and method of producing the same

Details Glass preform and method of producing the same Glass preform and method of producing the same

2006-04-11

2006-04-11

Miggins, Michael C. (Department: 1772)

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

C428S036910, C428S426000, C385S125000, C385S126000, C385S142000

Reexamination Certificate

active

07026025

ABSTRACT:
In a glass preform (10) to be subjected to fiber-drawing, use is made of a cylindrical glass tube (21) whose one end in an axial direction is sealed. A plurality of glass capillaries (22) 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.

REFERENCES:
patent: 2002/0118938 (2002-08-01), Hasegawa et al.
patent: 2003/0068150 (2003-04-01), Ariel et al.
patent: 2004/0096173 (2004-05-01), Fekety et al.
patent: 2004/0105641 (2004-06-01), Russell et al.
patent: 2002 55242 (2002-02-01), None
patent: 2002 97034 (2002-04-01), None
patent: WO 99/00685 (1999-01-01), None
patent: WO 00/60388 (2000-12-01), None

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