Anti-fog element
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United States of America Patent
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Dec 29, 1998
Grant Date -
N/A
app pub date -
Jul 21, 1997
filing date -
Jul 26, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
An anti-fog element includes a transparent substrate such as a glass substrate, a transparent film of a photocatalyzer such as TiO.sub.2 catalyzing a photocatalytic reaction on the transparent substrate, and a film of a transparent porous inorganic oxide such as SiO.sub.2 formed on the film of the photocatalyzer and having a surface exhibiting a hydrophilic property. Organic matters etc. deposited in openings of the porous inorganic oxide film are dissolved and removed by a photocatalytic reaction caused by light excitation of the photocatalyzer film whereby the anti-fog property of the anti-fog element can be maintained over a long period of time.
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