Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Reexamination Certificate
2005-11-01
2010-11-23
Langel, Wayne (Department: 1793)
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
C423S44500R, C977S734000, C977S737000
Reexamination Certificate
active
07837968
ABSTRACT:
A carbon nanosphere has at least one opening. The carbon nanosphere is obtained by preparing a carbon nanosphere and treating it with an acid to form the opening. The carbon nanosphere with at least one opening has higher utilization of a surface area and electrical conductivity and lower mass transfer resistance than a conventional carbon nanotube, thus allowing for higher current density and cell voltage with a smaller amount of metal catalyst per unit area of a fuel cell electrode.
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The Registration Determination Certificate of CN 1781843 corresponding to U.S. Appl. No. 11/262,812 was issued on Jun. 9, 2010.
Chang Hyuk
Pak Chan-ho
Wang Jian Nong
H.C. Park & Associates PLC
Langel Wayne
Martinez Brittany M
Samsung SDI & Co., Ltd.
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