Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2007-04-24
2007-04-24
Garrett, Dawn (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C257S098000
Reexamination Certificate
active
10801288
ABSTRACT:
An electroluminescent device comprising a host material and a rubrene derivative having a naphthacene nucleus comprising four fused phenyl rings a, b, c, and d, in order, containing two secondary phenyl ring groups linked to the “c” ring, each bearing directly or indirectly a fluoro or perfluoroalkyl group, wherein each fluoro or perfluoroalkyl group is either:a) linked directly to one of said secondary phenyl rings and is located on a meta or ortho position, orb) located in any position of another aryl group linked directly or indirectly to one of the secondary phenyl rings.
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W. J. Begley, et al, “Organic Element for Electroluminescent Devices”, U.S. Appl. No. 10/700,894, filed Nov. 4, 2003.
V. V. Grushin, et al., “New, Efficient Electroluminescent Materials Based on Organometallic Ir Complexes”, Chem. Commun., 2001, pp. 1494-1495.
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Bessey Peter G.
Hatwar Tukaram K.
Helber Margaret J.
Rajeswaran Manju
Schmitthenner Hans F.
Eastman Kodak Company
Garrett Dawn
Kluegel Arthur E.
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