Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Reexamination Certificate
2007-07-10
2011-12-20
Chandrakumar, Nizal (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
C548S440000, C549S460000, C549S033000, C546S082000, C546S085000
Reexamination Certificate
active
08080658
ABSTRACT:
A material for organic electroluminescence devices for use as a host material in combination with at least one phosphorescent metal complex contains a compound represented by formula 1:wherein R1to R10are each independently hydrogen atom, halogen atom, alkyl group having 1 to 40 carbon atoms, cycloalkyl group having 3 to 15 carbon atoms, heterocyclic group having 3 to 20 carbon atoms which is optionally substituted, alkoxy group having 1 to 40 carbon atoms, non-condensed aryl group having 6 to 40 carbon atoms, condensed aryl group having 10 to 18 carbon atoms, aryloxy group having 6 to 20 carbon atoms, aralkyl group having 7 to 20 carbon atoms, arylamino group having 6 to 40 carbon atoms, alkylamino group having 1 to 40 carbon atoms, aralkylamino group having 7 to 60 carbon atoms, arylcarbonyl group having 7 to 40 carbon atoms, alkyl halide group having 1 to 40 carbon atoms, or cyano group, R8and R9being optionally bonded to each other to form a ring structure and each of R1to R10being optionally substituted and having no polymerizable functional group at its terminal end; and X is sulfur atom or oxygen atom.
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Endo Jun
Fukuoka Kenichi
Iwakuma Toshihiro
Numata Masaki
Chandrakumar Nizal
Idemitsu Kosan Co. Ltd.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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