Electric lamp and discharge devices – With gas or vapor – Having electrode lead-in or electrode support sealed to...
Reexamination Certificate
2011-05-03
2011-05-03
Macchiarolo, Peter (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Having electrode lead-in or electrode support sealed to...
C501S098400
Reexamination Certificate
active
07936128
ABSTRACT:
A high intensity discharge lamp includes an arc tube with a chemical fill, capillaries extended from the arc tube, electrodes fed through the capillaries into the arc tube, and a frit seal that seals the capillaries, where the frit seal includes silica (SiO2) in a range of more than 0 wt % to less than 5 wt %, alumina (Al2O3), and one of dysprosia (Dy2O3) and yttrium oxide (Y2O3). This frit seal material can withstand a higher operating temperature so that the length of the capillaries can be reduced compared to those sealed with conventional frit seal material.
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American Ceramic Society (ACerS)—National Institute of Standards and Technology (NIST), Phase Equilibria Diagrams, Fig. 10390.
H. Yasuda et al., Solidification and shape casting of Al2O3-YAG eutectic ceramics from the undercooled melt produced by melting Al2O3-YAP eutectics, Science and Technology of Advanced Materials 5 (2004) 207-217.
U.S. Appl. No. 11/678,788, filed Feb. 26, 2007.
Caldwell Dana
Hecker Arlene
Holt Jeffrey
Clark Robert F.
Macchiarolo Peter
Osram Sylvania Inc.
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