Rare-earth doped fluorides and process for preparing

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

Reexamination Certificate

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Reexamination Certificate

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07901593

ABSTRACT:
The present invention is directed to rare-earth doped solid state solutions of alkaline earth fluorides having novel luminescence properties, and to a process for preparing them. The invention is useful as identifying markers on articles. Other uses include phosphors for plasma displays, optical frequency multipliers, optical amplifiers and the like.

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