Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate
2004-10-08
2009-10-13
Wu, David (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
C429S006000
Reexamination Certificate
active
07601759
ABSTRACT:
A water insoluble additive for improving the performance of an ion-exchange membrane, such as in the context of the high temperature operation of electrochemical fuel cells. The insoluble additive comprises a metal oxide cross-linked matrix having acid groups covalently attached to the matrix through linkers. In one embodiment, the metal is silicon and the cross-linked matrix is a siloxane cross-linked matrix containing silicon atoms cross-linked by multiple disiloxy bonds and having acid groups covalently attached to the silicon atoms through alkanediyl linkers.
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MacKinnon Sean M.
Peckham Timothy J.
Stone Charles
BDF IP Holdings Ltd.
Bernshteyn Michael M
Seed IP Law Group PLLC
Wu David
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