The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2013
Filed:
Jan. 28, 2010
Young-sic Kim, Seoul, KR;
Jae-ho Lee, Yongin-si, KR;
Young-sic Kim, Seoul, KR;
Jae-ho Lee, Yongin-si, KR;
Abstract
A method of preparing a halophosphate phosphor represented by Formula 1, the method comprising: mixing a metallic precursor compound, which comprises strontium pyrophosphate, strontium chloride and strontium carbonate, and an activator precursor compound to form a mixture; sintering the mixture under an oxygen or air atmosphere to form a sintered mixture; milling the sintered mixture to form a milled product, and sintering the milled product under a reducing atmosphere:(SrAM')(PO)Cl.(MO)  Formula 1wherein A is barium or calcium, M′ is an activator and comprises at least one cation selected from the group consisting of Eu, Mn, Sb, Ce, Pr, Nd, Sm, Tb, Dy, Ho, Er, Yband Bi, M is aluminum, yttrium or lanthanum, 0≦x≦4.8, 0<y≦0.2, and 0≦z<0.1.
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