Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2006-04-11
2006-04-11
Guharay, Karabi (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
C313S636000, C501S070000, C501S069000
Reexamination Certificate
active
07026753
ABSTRACT:
The present invention provides glass for a fluorescent lamp, comprising: CeO2of 0.1% to 1.0%, Sb2O3of 0.05% or lower, SiO2of 60% to 75%, Al2O3of 0.5% to 10%, B2O3of 0% to 5%, CaO of 0% to 8%, MgO of 0% to 8%, SrO of 0% to 15%, BaO of 1% to 12%, R2O of 13% to 22% (R represents Li, Na or K), Fe2O3of 0% to 0.2%, TiO2of 0% to 1.0%, and PbO of 0.05% or lower, the percent each being by mass; a glass tube for a fluorescent lamp comprises the above glass; and a fluorescent lamp comprises the above glass tube as an envelope.
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Futagami Tsutomu
Takagi Yukio
Guharay Karabi
Nippon Electric Glass Co. Ltd.
Nixon & Vanderhye P.C.
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