Method of forming multicolor surface
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United States of America Patent
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Mar 3, 2015
Grant Date -
Nov 14, 2013
app pub date -
May 12, 2012
filing date -
May 12, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A method of producing a multicolor surface is described herein. The method includes the following steps: providing an aluminum-based substrate having an outer and inner surfaces; performing a mechanical process on the substrate; forming at least one fixing portion on the inner surface of the substrate; forming at least one conductive hole on the fixing portion; performing a first anodization on the substrate to form a first oxide layer that can be dyed with a first color on the outer surface of the substrate; removing at least some of the first oxide layer from the fixing portion and the outer surface of the substrate; performing a second anodization on the substrate to form a second oxide layer that can be dyed with a second color on the exposed outer surface of the substrate stripped of the first oxide layer; and removing the fixing portion.
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