Multi-pane electrochromic windows
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United States of America Patent
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Nov 28, 2017
Grant Date -
Jun 2, 2016
app pub date -
Feb 2, 2016
filing date -
Aug 5, 2010
priority date (Note) -
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Abstract
Window units, for example insulating glass units (IGU's), that have at least two panes, each pane having an electrochromic device thereon, are described. Two optical state devices on each pane of a dual-pane window unit provide window units having four optical states. Window units described allow the end user a greater choice of how much light is transmitted through the electrochromic window. Also, by using two or more window panes, each with its own electrochromic device, registered in a window unit, visual defects in any of the individual devices are negated by virtue of the extremely small likelihood that any of the visual defects will align perfectly and thus be observable to the user.
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