Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate
2005-06-28
2005-06-28
Zalukaeva, Tatyana (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
C521S032000, C526S238210
Reexamination Certificate
active
06911483
ABSTRACT:
The present invention is related to a new quaternary amino (QA) anion exchanger comprising QA derivatized, hydroxy (C2-C4) alkylated and cross-linked regenerated cellulose, in which the level of derivitization with the QA-groups is 1.4 milli-equivalents per dry gram (meq/g) or greater.
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International Search Report from PCT/NZ00/00244 completed on Feb. 9, 2001.
Ayers John Stephen
Egan Margaret Mary Agnes
Elgar David Francis
Knobbe Martens Olson & Bear LLP
Massey University
Zalukaeva Tatyana
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