Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Nitrogen-containing reactant
Reexamination Certificate
2005-05-03
2005-05-03
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Nitrogen-containing reactant
C528S425000, C525S191000, C525S202000, C525S242000, C428S690000, C428S691000, C428S917000, C313S504000
Reexamination Certificate
active
06887972
ABSTRACT:
A polymeric material comprising alternate substituted fluorene and phenylene units, as represented by the following formulawherein R1, R2, R3and R4, which may be identical or different, are each selected from the group consisting of H, a (C1-C22) linear or branched alkyl, alkoxy or oligo (oxyetylene) group, a (C6-C30) cycloalkyl group, and an unsubstituted or substituted aryl group, and n is from about 3 to about 5000.
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Chua Soo Jin
Huang Wei
Pei Jian
Yu Wang Lin
Agency for Science Technology and Research
Ladas & Parry
Truong Duc
LandOfFree
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