Oligomers and polymers

Stock material or miscellaneous articles – Composite – Of inorganic material

Reexamination Certificate

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C257S040000, C528S401000, C528S422000

Reexamination Certificate

active

08043722

ABSTRACT:
An optionally substituted oligomer or polymer comprising a repeat unit of formula (I); wherein each Ar1and Ar3is the same or different and independently represents an optionally substituted aryl or heteroaryl; n is at least 1; Ar2represents an optionally substituted aryl or heteroaryl comprising a linking ring to which the two nitrogen atoms are both directly linked; and at least one of Ar2and either or both of Ar1is substituted with at least one substituent.

REFERENCES:
patent: 5948552 (1999-09-01), Antoniadis et al.
patent: 6309763 (2001-10-01), Woo et al.
patent: 6740900 (2004-05-01), Hirai
patent: 6858703 (2005-02-01), Allen et al.
patent: 0 805 143 (2001-12-01), None
patent: 10-308280 (1998-11-01), None
patent: WO-99/32537 (1999-07-01), None
patent: WO-00/55927 (2000-09-01), None
patent: WO-01/66618 (2001-09-01), None
patent: WO-03/000773 (2003-01-01), None
patent: WO 03/000773 (2003-01-01), None
patent: WO 03/035714 (2003-05-01), None

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