Fluorescent lamp coating and coating recycling method
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United States of America Patent
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Mar 11, 2003
Grant Date -
N/A
app pub date -
Feb 17, 2000
filing date -
Feb 17, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A process for recovering rare-earth phosphors from an interior of a lamp envelope (12). The interior of the envelope defines a wall and a base layer (14) is adhered to the wall. A coating layer (16) having the rare-earth phosphors is adhered to the base layer. The process includes flowing a gas through the envelope at a rate sufficient to remove particles of the coating layer but not the base layer. The process also includes collecting the particles of the coating layer, the particles containing the rare-earth phosphors. Lamp envelopes (12) having a base layer (14) and a phosphor coating layer (16) suitable for use with the recycling method are also discussed.
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