Title:
GLASS COMPOSITION FOR LAMP AND LAMP USING SAME
Document Type and Number:
WIPO Patent Application WO/2005/115937
Kind Code:
A1
Abstract:
Disclosed is a glass composition for lamps mainly containing SiO2 (silicon dioxide) and further containing 12-17 wt% of Na2O (sodium oxide), 2.5-4 wt% of MgO (magnesium oxide) and 5.3-7.3 wt% of CaO (calcium oxide) with MgO and CaO being 8-11 wt% in total. With this constitution, the glass composition can be obtained at low cost while having excellent strength and workability. Furthermore, this glass composition does not erode a melting furnace and only a small amount of alkali is dissolved therefrom.
Inventors:
ABE JUNKO
ATAGI TOMOKO
ITO MASANOBU
NIGUMA YASURO
SAWA RYOSUKE
WATANABE HIROYA
ATAGI TOMOKO
ITO MASANOBU
NIGUMA YASURO
SAWA RYOSUKE
WATANABE HIROYA
Application Number:
PCT/JP2005/009902
Publication Date:
December 08, 2005
Filing Date:
May 30, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
ABE JUNKO
ATAGI TOMOKO
ITO MASANOBU
NIGUMA YASURO
SAWA RYOSUKE
WATANABE HIROYA
ABE JUNKO
ATAGI TOMOKO
ITO MASANOBU
NIGUMA YASURO
SAWA RYOSUKE
WATANABE HIROYA
International Classes:
C03C3/091; H01J61/30; H01J61/32; C03C3/078; (IPC1-7): C03C3/078; C03C3/091; H01J61/30; H01J61/32
Domestic Patent References:
| WO1996024560A1 | 1996-08-15 |
Foreign References:
| JP2000290038A | 2000-10-17 | |||
| JP2002137935A | 2002-05-14 |
Attorney, Agent or Firm:
Nakajima, Shiro (2-1 Toyosaki 3-chome, Kita-ku, Osaka-sh, Osaka 72, JP)
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