Cathodoluminescent phosphor powders, methods for making...

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

Reexamination Certificate

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C252S30140F, C252S30140S, C252S30160S, C252S30160F, C313S467000, C313S468000, C313S478000, C313S485000, C313S486000, C313S496000, C313S309000, C313S336000, C313S351000

Reexamination Certificate

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06875372

ABSTRACT:
Cathodoluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The method of the invention advantageously permits the economic production of such powders. The invention also relates to improved devices, such as cathodoluminescent display devices, incorporating the phosphor powders.

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