Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2008-05-27
2008-05-27
Lipman, Bernard (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S359300, C525S384000, C525S419000, C525S420000
Reexamination Certificate
active
07378471
ABSTRACT:
The present invention is related to a polymer comprising terminal sulfonic acid groups, which has a high ionic conductivity and good structural stability, does not decompose even under low humidity conditions, and is inexpensive to produce. Furthermore, the present invention is related to a polymer electrolyte and a fuel cell using the same. The polymer of the present invention has a substituent comprising a terminal sulfonic acid group comprising Formula (1) at a side chain:where n may be a number in the range of about 1 to about 5.
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Jeong Min-ju
Jung Myung-sup
Kim Do-yun
Moon Bong-Seok
H.C. Park & Associates PLC
Lipman Bernard
Samsung SDI & Co., Ltd.
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