Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2005-03-16
2009-10-06
Truong, Duc (Department: 1796)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S010000, C429S006000, C528S171000, C528S391000, C521S027000
Reexamination Certificate
active
07597980
ABSTRACT:
A solid electrolyte membrane for solid polymer fuel cells, or the like is provided that is chemically stable in a strong acid atmosphere, and has low methanol cross-over as well as high proton conductivity. The solid electrolyte membrane is manufactured, using an electrolyte composition comprising a sulfonic acid group-containing polymer having a specific triazine structure. This polymer can be synthesized, for example, from a sulfonic acid group-containing dihydroxy compound having a triazine structure, and a difluoride.
REFERENCES:
patent: 2001-354641 (2001-12-01), None
patent: 2002-3466 (2002-01-01), None
patent: 2003-22709 (2003-01-01), None
patent: 2003-335835 (2003-11-01), None
patent: 2005-133092 (2005-05-01), None
Japanese Office Action dated Jun. 17, 2009, issued in corresponding Japanese Application No. 2004-097398.
Cooray Nawalage Florence
Sawatari Norio
Takei Fumio
Tomoi Masao
Fujitsu Limited
Truong Duc
Westerman, Hattori, Daniels & Adrian , LLP.
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