Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-02-01
2005-02-01
Garrett, Dawn (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C252S301160
Reexamination Certificate
active
06849348
ABSTRACT:
An organic compound comprising a complex fluorene structure represented by one of the following formulas:wherein:X1, X2, X3, and X4are individually the same or different and include a moiety containing CH or N; R1, R2, R3, and R4are substituents each being individually hydrogen, or alkyl, or alkenyl, or alkynyl, or alkoxy of from 1 to 40 carbon atoms; aryl or substituted aryl of from 6 to 60 carbon atoms; or heteroaryl or substituted heteroaryl of from 4 to 60 carbons; or F, Cl, or Br; or a cyano group; or a nitro group; or R3, or R4or both are groups that form fused aromatic or heteroaromatic rings.
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Bennett Grace A.
Vaeth Kathleen M.
Zheng Shiying
Garrett Dawn
Owens Raymond L.
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