Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...
Reexamination Certificate
2006-12-05
2006-12-05
Hug, Eric (Department: 1731)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Process of manufacturing optical fibers, waveguides, or...
C065S377000, C065S379000, C065S424000
Reexamination Certificate
active
07143612
ABSTRACT:
To provide a method for producing a glass particle deposit and a method for producing a glass preform, in which outer diameter variation of the glass particle deposit can be reduced to thereby improve quality. A flow rate of clean gas (CG) introduced into a container potion10is limited to thereby prevent the outermost layer of a glass particle deposit20from being locally cooled and reduce variation in bulk density in the longitudinal direction of the glass particle deposit20, that is, outer diameter variation and breakage.
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Hug Eric
McDermott Will & Emery LLP
Sumitomo Electric Industries Ltd.
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