Panel glass for cathode ray tube
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United States of America Patent
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Oct 18, 2005
Grant Date -
May 8, 2003
app pub date -
Oct 23, 2002
filing date -
Oct 30, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Panel glass, for a cathode ray tube, which has an SrO/(SrO+BaO) ratio of from 0.35 to 0.70, an X-ray absorption coefficient of 36.0 cm-1 or more at the wavelength of 0.6 angstrom, wherein Na2O/R2O, K2O/R2O and Li2O/R2O (R2O: Na2O+K2O+Li2O) molar ratios fall within a range surrounded by the points A (0, 0.2, 0.8), B (0.2, 0.2, 0.6), C (0.4, 0.6, 0), D (0.2, 0.8, 0) and E (0, 0.4, 0.6) in the ternary phase diagram as shown in FIG. 1.
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