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US 2002/0117767 A1Published application
Encapsulated phosphor with reduced surface area
OwnerRichard G. W. Gingerich, Clarence D. Vanderpoolinventors
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Abstract
A method of reducing the surface area of an encapsulated phosphor includes the steps of preparing a homogeneous mixture of an encapsulated phosphor and a surface area reducing agent selected from the group consisting essentially of boric acid and ammonium dihydrogen phosphate and firing the mixture for a time and at a temperature to reduce the surface area of the encapsulated phosphor.
Claims4
In a method of reducing the surface area of an encapsulated phosphor the steps comprising:
- preparing a homogeneous mixture of an encapsulated phosphor and a surface area reducing agent seed from the group consisting essentially of boric acid and ammonium dihydrogen phosphate and firing said mixture for a time and at a temperature to reduce said surface area of said encapsulated phosphor.
Dependencies are inferred from the claim text.