Method of producing UV-emitting magnesium pentaborate phosphors

Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides

Reexamination Certificate

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Reexamination Certificate

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07846352

ABSTRACT:
A method of producing a UV-emitting magnesium pentaborate phosphor is described. The method comprises combining a hydrated magnesium hexaborate with oxides of Y, Gd, Ce and Pr to form a mixture and firing the mixture in a slightly reducing atmosphere to form the phosphor. The hydrated magnesium hexaborate, which is preferably prepared as a precipitate, preferably has a formula MgB6O10.XH2O where X is from 4 to 6.

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U.S. Appl. No. 12/030,374, filed Feb. 13, 2008.
U.S. Appl. No. 12/030,336, filed Feb. 13, 2008.

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