Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
2005-12-27
2005-12-27
Wilson, James O. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
active
06979737
ABSTRACT:
A novel AB2monomer, 2,3-bis(4-phenyloxyphenyl)-6-quinoxaline carboxylic acid.
REFERENCES:
patent: 6552195 (2003-04-01), Baek et al.
Baek et al, “Synthesis and Polymerization of a bis(O-aminophenol)-Carboxylic Acid AB2 Monomer” Polymer Preprints, vol. 42(2), pp. 502-503 (2001), as abstracted by CAPLUS.
Jong-Beom Baek, Loon-Seng Tan ,Improved syntheses of poly(oxy-1,3-phenylencarbonyl-1,4-phenylene) and related poly(ether-ketones) using polyphosphoric acid/P205 as polymerization medium, Polymer, 44 (2003) 4135-4147, published Jul. 2003.
Jong-Beom Baek, Loon-Seng Tan ,Synthesis of Hyperbranched Poly(Ether-Ketone) Containing Quinoxaline Moiety from an AB2Monomer in Polyphosphoric Acid/P2O5,Polymer Preprints,2002, 43(1), 4-515, published in Mar. 2002.
Baek Jong-Beom
Tan Loon-Seng
AFMCLO/JAZ
Bricker Charles E.
The United States of America as represented by the Secretary of
Tucker Zachary C.
Wilson James O.
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