Filters for electronic display devices
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United States of America Patent
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Apr 21, 2009
Grant Date -
Nov 8, 2007
app pub date -
Jul 27, 2005
filing date -
Jul 27, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a filter for electronic display devices, comprising a squarylium compound represented by General Formula (I):may be the same or different and each represents a hydrogen atom, an alkyl group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s), or a heterocyclic group optionally having substituent(s); X represents a group represented by following Formula (A):may be combined together with the adjacent nitrogen atom thereto form a heterocyclic group optionally having substituent(s))].
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