Heat-screening glass
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United States of America Patent
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-
Aug 30, 1994
Grant Date -
N/A
app pub date -
Feb 10, 1992
filing date -
Feb 21, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a heat-screening glass provided with a protective film having improved wear resistance and chemical resistance in comparison with a protective film of silicon dioxide. A heat-screening glass according to the present invention is composed of a transparent sheet glass and a heat-screening film coated thereon and a protective film made of silicon oxynitride as an outermost layer. The protective film is made of silicon oxynitride represented by the formula SiO.sub.x N.sub.y (where x ranges from 0.65 to 1.25 and y ranges from 0.05 to 0.67) .
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