Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2006-03-30
2011-11-01
Koslow, Carol M (Department: 1734)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C252S301360, C257S098000, C313S503000, C313S486000
Reexamination Certificate
active
08048338
ABSTRACT:
To provide a phosphor having a broad emission spectrum in a range of blue color (in a peak wavelength range from 400 nm to 500 nm), having a broad flat excitation band in a near ultraviolet/ultraviolet range, and having excellent emission efficiency and emission intensity/luminance. The phosphor is given as a general composition formula expressed by MmAaBbOoNn:Z, (where element M is the element having bivalent valency, element A is the element having tervalent valency, element B is the element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator), satisfying 5.0<(a+b)/m<9.0, 0≦a/m≦2.0, 0≦o≦n, n=2/3m+a+4/3b−2/3o, and has an emission spectrum with a maximum peak in the wavelength range from 400 nm to 500 nm under an excitation of the light in a wavelength range from 250 nm to 430 nm.
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Office Action issued Mar. 9, 2011, in Chinese Patent Application No. 200680010489.4 (with English-language translation).
Taiwanese Office Action issued on Jan. 14, 2011 in corresponding Taiwanese Application No. 095111455 (with an English Translation).
Nagatomi Akira
Sakane Kenji
Dowa Electronics Materials Co., Ltd.
Koslow Carol M
Mitsubishi Chemical Corporation
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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