Implements or apparatus for applying pushing or pulling force – Printer's quoins
Reexamination Certificate
2005-03-09
2009-08-11
Menz, Douglas M (Department: 2891)
Implements or apparatus for applying pushing or pulling force
Printer's quoins
C257SE51049, C564S308000
Reexamination Certificate
active
07571894
ABSTRACT:
This organic electroluminescence element has an organic light-emitting layer between a positive electrode and a negative electrode, wherein the organic light-emitting layer contains a 1,3,6,8-tetrasubstituted pyrene compound having a specific structure as an organic light-emitting layer forming material. Provided are an organic light-emitting layer forming material that emits blue light with a high color purity, has a high luminous efficiency, and is stable for a long duration of operation, when used singly or as a guest, an organic EL element having a high luminous efficiency and a long operation lifetime, and a high-performance organic EL display that has a high luminous efficiency and a long operation lifetime.
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Fuji Photo Film Co. , Ltd.
Menz Douglas M
Such Matthew W
Westerman, Hattori, Daniels & Adrian , LLP.
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