Compositions – Inorganic luminescent compositions – Zinc or cadmium containing
Reexamination Certificate
2007-01-12
2010-11-16
Koslow, C. Melissa (Department: 1793)
Compositions
Inorganic luminescent compositions
Zinc or cadmium containing
C428S403000, C428S404000, C427S212000, C427S213000, C427S215000
Reexamination Certificate
active
07833437
ABSTRACT:
The present invention is an electroluminescent phosphor wherein each individual phosphor particle is encapsulated in an inorganic coating applied by an atomic layer deposition (ALD) coating method. In a preferred embodiment, the coating is aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps.
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Front page, search report and written opinion for WO 2007/087479, Aug. 2, 2007.
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Benjamin Dale E.
Coveleskie Joan M.
Dang Tuan A.
Fan Chen-Wen
Schwab Frank A.
Ballard Spahr LLP
Global Tungsten & Powders Corp.
Koslow C. Melissa
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