Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2011-06-21
2011-06-21
Tarazano, D. Lawrence (Department: 1786)
Stock material or miscellaneous articles
Composite
Of inorganic material
C313S504000, C546S257000
Reexamination Certificate
active
07964293
ABSTRACT:
A compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and an organic EL device comprising the compound in the electron transport layer is long in life, and low in drive voltage:wherein G is an n-valent link, n is an integer of 2 to 4; R1to R4are each independently hydrogen, a monovalent group, or a free valency bonded with G, and R5to R8are each independently hydrogen or a monovalent group, and one of R1to R4is a free valency bonded with G; and n groups of 2,3′-bipyridyl may be the same or different with each other.
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Kageyama Akiko
Ono Youhei
Uchida Manabu
Yamada Hiroshi
Clark Gregory
JNC Corporation
Tarazano D. Lawrence
Wenderoth , Lind & Ponack, L.L.P.
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