Process for producing single wall nanotubes using unsupported metal catalysts
Patent 6221330 Issued on April 24, 2001. Estimated Expiration Date: 
August 4, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 4, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for preparing fine carbon fibers in a gaseous phase reaction Process for preparing carbon fibers in gas phase growth Process for producing graphite whiskers Method for forming carbon fibers Carbon fibers and method for their production Patent #: 5424054 InventorsAssigneeApplicationNo. 910495 filed on 08/04/1997US Classes:423/447.3, From gaseous reactants423/445B, Fullerene (e.g., C60, C70, etc.)423/447.2ProductExaminersPrimary: Griffin, Steven P.Assistant: DiMauro, Peter Attorney, Agent or FirmForeign Patent References
International ClassesD01F 009/12D01F 009/127 AbstractA process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, O, N, S or Cl as hetero atoms, optionally admixed with hydrogen, and a gas phase metal containing compound which is unstable under reaction conditions for said decomposition, and which forms a metal containing catalyst which acts as a decomposition catalyst under reaction conditions; and then conducting said decomposition reaction under decomposition reaction conditions, thereby producing said nanotubes.Other References
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