Glass manufacturing – Processes – Sequentially forming – reheating – and working
Reexamination Certificate
2006-12-22
2010-12-21
Dehghan, Queenie (Department: 1791)
Glass manufacturing
Processes
Sequentially forming, reheating, and working
C065S393000
Reexamination Certificate
active
07854143
ABSTRACT:
An optical fiber preform comprising a plurality of longitudinal air holes is subjected to a thermal treatment (i.e., heating), coupled with the application of a compressive force on either end of the heated preform to compress the entire preform structure a predetermined amount. The thermal compression treatment has been found to smooth any roughened glass surfaces and heal microcracks that may have formed during the preform fabrication process, essentially “knitting” the glass material back together and forming a preform of improved quality over the prior art microstructured preforms.
REFERENCES:
patent: 4661136 (1987-04-01), Dorn et al.
patent: 5221307 (1993-06-01), Takagi et al.
patent: 5338327 (1994-08-01), Ohga et al.
patent: 5864644 (1999-01-01), DiGiovanni et al.
patent: 6053013 (2000-04-01), Oh et al.
patent: 6324871 (2001-12-01), Nakamura et al.
patent: 6493492 (2002-12-01), Fischer
patent: 6701753 (2004-03-01), Dong et al.
patent: 6732545 (2004-05-01), Cadet et al.
patent: 6748767 (2004-06-01), Mandich et al.
patent: 6847771 (2005-01-01), Fajardo et al.
patent: 6892018 (2005-05-01), Libori et al.
patent: 6928220 (2005-08-01), Wang et al.
patent: 6968107 (2005-11-01), Belardi et al.
patent: 7082242 (2006-07-01), Fajardo et al.
patent: 2002/0134113 (2002-09-01), Berkey
patent: 2005/0074215 (2005-04-01), Sanghera et al.
patent: 2005/0103057 (2005-05-01), Kang et al.
patent: 2005/0178160 (2005-08-01), Baik et al.
patent: 2006/0213230 (2006-09-01), Miyabe et al.
patent: 10273329 (1998-10-01), None
Takao, Kiyoshi, Production of Amorphous Glass and Drying Vessel Thereof, Oct. 13, 1998, JP 10-273329, machine translation.
Bise Ryan
Fleming James W.
Zydzik George J.
Dehghan Queenie
OFS Fitel LLC
LandOfFree
Optical fiber preform with improved air/glass interface... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical fiber preform with improved air/glass interface..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fiber preform with improved air/glass interface... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4158460