Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2007-12-18
2007-12-18
Koslow, C. Melissa (Department: 1793)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C252S30140F, C427S403000, C427S404000, C427S212000, C427S215000
Reexamination Certificate
active
10908002
ABSTRACT:
A UV-emitting phosphor comprising SrB4O7:Eu phosphor particles that have been treated to yield a surface layer containing from greater than 0 to about 25 atomic percent aluminum. The holdover stability of the treated SrB4O7:Eu phosphor improves the 100-hour maintenance in a fluorescent tanning lamp to the extent that the treated phosphor may be subject to a holdover period of more than 25 days without a significant change in its 100-hour maintenance.
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Fan Chen-Wen
Snyder Thomas M.
Thomason Eric A.
Clark Robert F.
Koslow C. Melissa
Osram Sylvania Inc.
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