Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2005-11-29
2005-11-29
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
Reexamination Certificate
active
06969475
ABSTRACT:
A photoluminescent phosphorescent material for emergency lighting and the like. An alkaline earth aluminate base material is alloyed with a lanthamide earth element and a transition metal element. When exposed to ambient lighting, the material of the present invention emits light in dark areas even after the loss of electrical power. The addition of a transition metal element such as Scandium (Sc) provides longer and brighter photoluminescence than is expected by the use of a lanthanide element alone.
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Kinzo Nonomura, Hidetaka Higashino, and Ryuichi Murai, “Plasma Display Materials,” MRS Bulletin, Nov. 2002, pp. 898-902.
Dunville Brian Tyler
Hyland, Jr. Robert W.
Quintenz James P.
Subrahmanyam Gowri
Buchanan & Ingersoll PC
KB Alloys
Koslow C. Melissa
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