PROTECTIVE COATINGS FOR SUBSTRATES HAVING AN ACTIVE SURFACE
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United States of America Patent
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Issued Date -
Mar 14, 2013
app pub date -
May 10, 2011
filing date -
May 27, 2010
priority date (Note) -
Abandoned
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Abstract
A coated substrate having a surface containing at least one active species such as an oxide to which is bonded at least one amorphous phospho-alumina layer containing an aluminum to phosphorus atomic ratio of about 0.2 to about 0.8 is bonded to at least one further amorphous phospho-alumina layer containing an aluminum to phosphorus atomic ratio of at least about 1.
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