Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – With measuring – controlling – sensing – programming – timing,...
Reexamination Certificate
2004-11-19
2009-12-29
Griffin, Steven P (Department: 1791)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
With measuring, controlling, sensing, programming, timing,...
C065S417000, C065S419000, C065S488000, C065S271000, C065S276000, C065S509000
Reexamination Certificate
active
07637125
ABSTRACT:
In a glass processing method according to the invention, in the case of performing chemical vapor deposition or diameter shrinkage of a substrate glass tube G by relatively moving a heating furnace20comprising a heating element21for annularly enclosing the circumference of the substrate glass tube in a longitudinal direction of the substrate glass tube G with respect to the substrate glass tube G in which an outer diameter is 30 mm or more and a wall thickness is 3 mm or more and is less than 15 mm and an ovality of the outer diameter is 1.0% or less using a glass processing apparatus1, a temperature of at least one of the heating element21and the substrate glass tube G is measured and the amount of heat generation of the heating element21is adjusted based on the measured temperature.
REFERENCES:
patent: 5203691 (1993-04-01), OBrien, Jr.
patent: 5318612 (1994-06-01), Le Noane et al.
patent: 6502427 (2003-01-01), Yuan
patent: 2003/0115908 (2003-06-01), Hammerle et al.
patent: 2005/0103057 (2005-05-01), Kang et al.
patent: 61-222934 (1986-10-01), None
patent: 62-162632 (1987-07-01), None
patent: 3-242342 (1991-10-01), None
patent: 4-26522 (1992-01-01), None
patent: 2003-238177 (2003-08-01), None
patent: 2003221247 (2003-08-01), None
patent: 2003-321238 (2003-11-01), None
patent: WO 00/34193 (2000-06-01), None
ed. R.L. Howell & J.M. MorrissOptical Fiber CommunicationsInternational Edition 1991, McGraw-Hill Book Co., p. 66-67.
Hirano Masaaki
Nakanishi Tetsuya
Onishi Masashi
Taira Nobuyuki
Yokokawa Tomoyuki
Dehghan Queenie
Griffin Steven P
McDermott Will & Emery LLP
Sumitomo Electric Industries Ltd.
LandOfFree
Glass tube processing method, apparatus and glass tube does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Glass tube processing method, apparatus and glass tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glass tube processing method, apparatus and glass tube will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4098671