Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Reexamination Certificate
2007-04-03
2007-04-03
Hendrickson, Stuart (Department: 1754)
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
Reexamination Certificate
active
10776140
ABSTRACT:
An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and an aluminum and/or magnesium compound, optionally in the presence of carbon particles or carbon fibril aggregates. The catalyst may also be made by incorporating a compound of a fibril-forming metal onto magnesia particles in carbon particles or carbon fibril aggregates. The catalysts, methods of using them to form carbon fibrils and those carbon fibrils are also disclosed.
REFERENCES:
patent: 5162281 (1992-11-01), Kamo et al.
patent: 6294144 (2001-09-01), Moy et al.
Chishti Asif
Moy David
Evans, Esq. Barry
Hendrickson Stuart
Hyperion Catalysis International Inc.
Kramer Levin Naftalis & Frankel LLP
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