Phosphorescent phosphor and method of manufacturing thereof

Details Phosphorescent phosphor and method of manufacturing thereof Phosphorescent phosphor and method of manufacturing thereof

2004-11-05

2008-09-23

Koslow, C. Melissa (Department: 1793)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

Reexamination Certificate

active

07427365

ABSTRACT:
A phosphorescent phosphor having excellent afterglow luminance characteristics, even under low illumination intensity of radiation conditions, compared to conventional strontium aluminate phosphorescent phosphors of the same type, and particularly a phosphorescent phosphor having excellent initial afterglow luminance characteristics, with following requirements: 0.015<Eu/(Sr+Eu+Dy)≦0.05, 0.4≦Dy/Eu≦2, and 2.02≦Al/(Sr+Eu+Dy)≦2.4.

REFERENCES:
patent: 7-11250 (1995-01-01), None
patent: 8-127772 (1996-05-01), None
U.S. Appl. No. 10/551,424, filed Sep. 30, 2005, Hirata et al.

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