Powdered fluorescent material and method for manufacturing the same, light-emitting device, and illumination apparatus
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United States of America Patent
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Issued Date -
Sep 21, 2006
app pub date -
Feb 1, 2006
filing date -
Mar 18, 2005
priority date (Note) -
Abandoned
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Abstract
Powdered fluorescent material excited by visible light that emits visible light has particles with particle sizes of 20 .mu.m or less in the content of below 2% by mass. The method for manufacturing a powdered fluorescent material comprises the steps of: sintering raw material powder of the fluorescent material; and chemically processing the sintered powder after said sintering with acid solution.
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