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US Patent 6994907 - Carbon nanotube product comprising single-walled carbon nanotubes

US Patent Issued on February 7, 2006
Estimated Patent Expiration Date: Icon_subject April 25, 2023Estimated 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.
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Abstract

A carbon nanotube product formed from a metallic catalytic particle and single-walled carbon nanotubes deposited thereon. The catalytic particles preferably contain at least one metal from Group VIII, including for example Co, Ni, Ru, Rh, Pd, Ir, and Pt, and at least one metal from Group VIb including for example Mo, W and Cr. The metallic catalytic particle preferably further comprises a support material such as silica. The carbon nanotube product is preferably formed by exposing the metallic catalytic particle to a carbon-containing gas at a temperature sufficient to form the single-walled nanotubes as a primary portion of a solid carbon product on the metallic catalytic particles.

Other References

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Inventors

Assignee

Application

No. 10423687 filed on 04/25/2003

US Classes:

428/367, Including free carbon or carbide or therewith (not as steel)204/173, Carbon502/174, Inorganic carbon containing423/461, Recovery or purification502/180, Elemental carbon423/210, MODIFYING OR REMOVING COMPONENT OF NORMALLY GASEOUS MIXTURE502/416, Free carbon containing428/364, Rod, strand, filament or fiber427/216, Metal base423/344, Binary compound (e.g., silicide, etc.)428/408, SELF-SUSTAINING CARBON MASS OR LAYER WITH IMPREGNANT OR OTHER LAYER423/249, RADIOACTIVE (AT. NO. 84+ OR RADIOACTIVE ISOTOPE OF ANOTHER ELEMENT)423/447.3From gaseous reactants

Field of Search

423/447.2, Product428/367Including free carbon or carbide or therewith (not as steel)

Examiners

Primary: Hendrickson, Stuart L.

Attorney, Agent or Firm

US Patent References

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Foreign Patent References

  • 9709272 WO 03/01/1997
  • 98392550 WO 09/01/1998
  • 9842620 WO 10/01/1998
  • WO 00/17102 WO 03/01/2000
  • PCT/US00/15362 WO 06/01/2000
  • 0073205 WO 07/01/2000
  • PCT/US02/23155 WO 07/01/2003

International Class

D01F 9/12

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