Blue high silica glass
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United States of America Patent
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Mar 11, 1997
Grant Date -
N/A
app pub date -
Mar 20, 1995
filing date -
Mar 20, 1995
priority date (Note) -
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Abstract
High silica glasses exhibiting blue color by transmitted light are produced by impregnating a porous, high silica glass with a solution of cobalt, aluminum, and selected alkaline earth or alkali salts, and then consolidating the glass under oxidizing conditions to dope the glass with the corresponding oxides. The tinted glass has particular utility as a blue filter for lighting applications.
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