Fine Particle
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United States of America Patent
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Issued Date -
Sep 13, 2007
app pub date -
Mar 18, 2005
filing date -
Mar 22, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fine particle uniformly holding a substance having a catalytic influence on a surface. Sputtering is performed by agitating or rotating the fine particles 3 in a vacuum container 1, which has a polygon inner cross-section shape, by rotating the vacuum container 1, having a rotating axis almost vertical to the cross-section, and the surfaces of the fine particles 3 are coated with super-fine particles having a smaller particle diameter than that of the fine particle, or a thin film. The super-fine particle or the thin film is composed of at least a metal catalyst or an oxide catalyst or a composite catalyst.
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