Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2008-04-15
2008-04-15
Hendrickson, Stuart (Department: 1793)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S047000, C502S185000, C423S449100
Reexamination Certificate
active
07358004
ABSTRACT:
A carbon black is provided which is useful as an electrocatalyst carrier. The carbon black has a DBP oil absorption of 170 to 300 cm3/100 g, a specific surface area as measured by a BET method of 250 to 400 m2/g, a primary particle diameter value of 10 to 17 nm, and a total volume of open pores at the surface which have a pore radius of 10 to 30 nm of 0.40 to 2.0 cm3/g. The electrocatalyst can be used in electrochemical devices such as solid polymer electrolyte fuel cells.
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Igarashi Hiroshi
Kanamaru Shinichi
Suzuki Mitsuo
Ueda Masamichi
Yoshimura Shushichi
Hendrickson Stuart
N. E. Chemcat Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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