Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Reexamination Certificate
2011-07-12
2011-07-12
Brunsman, David M. (Department: 1732)
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
C501S065000, C501S066000, C501S067000, C501S068000, C501S069000, C501S070000, C501S072000
Reexamination Certificate
active
07977262
ABSTRACT:
A glass composition which contains Ce ions as a component substantially comprises, in terms of oxides, SiO2: 55 to 75 wt %, B2O3: 6 to 25 wt %, CeO2: 0.01 to 5 wt %, SnO: 0.01 to 5 wt %, Al2O3: 0 to 10 wt %, Li2O: 0 to 10 wt %, Na2O: 0 to 10 wt %, K2O: 0 to 10 wt %, MgO: 0 to 5 wt %, CaO: 0 to 10 wt %, SrO: 0 to 10 wt %, BaO 0 to 10 wt %, TiO2: 0 to 1.0 wt %, Fe2O3: 0.01 to 0.2 wt %, Sb2O3: 0 to 5 wt %, ZrO2: 0.01 to 5 wt %. By having such constituents, the glass composition is capable of suppressing transmission of ultraviolet light and solarization, and thus the glass composition hardly suffers from initial coloring or coloring during lamp production.
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Motoya Atsushi
Niguma Yasurou
Brunsman David M.
Johnson Kevin M
Panasonic Corporation
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