U.S. patents available from 1976 to present.
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Preparation of carbide nanorods

Patent 5997832 Issued on December 7, 1999. Estimated Expiration Date: Icon_subject March 7, 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 References

3246950

3447952

Chemical vapor deposition process for producing metal carbide or nitride whiskers
Patent #: 4756791
Issued on: 07/12/1988
Inventor: D'Angelo ,   et al.

Chemical vapor deposition reactor for producing metal carbide or nitride whiskers
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Issued on: 02/13/1990
Inventor: D'Angelo, et al.

Process for the preparation of silicon carbide whiskers
Patent #: 4904622
Issued on: 02/27/1990
Inventor: Dubots, et al.

Process for producing silicon carbide and metal carbides
Patent #: 4948573
Issued on: 08/14/1990
Inventor: Nadkarni, et al.

Metal carbide, nitride, or carbonitride whiskers coated with metal carbides, nitrides, carbonitrides, or oxides
Patent #: 4988564
Issued on: 01/29/1991
Inventor: D'Angelo, et al.

Method of forming a carbide on a carbon substrate
Patent #: 5141773
Issued on: 08/25/1992
Inventor: Gilbert, et al.

Production of silicon carbide whiskers using a seeding component to determine shape and size of whiskers
Patent #: 5221526
Issued on: 06/22/1993
Inventor: Qi, et al.

Process for preparing an impermeable carbon fiber reinforcing type of composite material Patent #: 5244609
Issued on: 09/14/1993
Inventor: Ishiyama

Inventors

Assignee

Application

No. 814745 filed on 03/07/1997

US Classes:

423/249, RADIOACTIVE (AT. NO. 84+ OR RADIOACTIVE ISOTOPE OF ANOTHER ELEMENT)423/263, RARE EARTH COMPOUND (AT. NO. 21, 39, OR 57-71)423/345, Of carbon (i.e., silicon carbide)423/346, By reacting vapor phase silicon compound with carbon or carbon containing compound423/439, Binary compound (e.g., carbide, etc.)423/440Refractory metal containing

Examiners

Primary: Griffin, Steven P.
Assistant: Hendrickson, Stuart L.

Attorney, Agent or Firm

Foreign Patent References

  • 0 400 656 A1 EP. 05/13/1990
  • 0 582 435 A1 EP. 02/13/1994
  • 0 603 888 A2 EP. 06/13/1994
  • 2-175698 JP. 07/13/1990
  • 5-221799 JP. 08/13/1993
  • WO 89/07163 WO. 08/13/1989
  • WO 96/30570 WO. 10/13/1996

International Class

C01B 031/30

Abstract

A process utilizing a supported metal catalyst, a volatile species source, and a carbon source has been developed to produce carbide nanorods with diameters of less than about 100 nm and aspect ratios of 10 to 1000. The volatile species source, carbon source, and supported metal catalyst can be used to produce carbide nanorods in single run, batch, and continuous reactors under relatively mild conditions. The method employs a simple catalytic process involving readily available starting materials.

Other References

  • Bhat et al., "An Examination Of The Growth Models For TIC Whiskers Made By CVD", Materials & Manufacturing Processes 7(4), 613-625 (1992) no month
  • Ebbesen et al., "Large-scale Synthesis of Carbon Nanotubes", Nature 358, 220-222 (1992) Jul
  • Hamilton et al., "Preparation of Amorphous Boron Nitride and Its Conversion to a Turbostratic, Tubular Form", Science 260, 659-661 (1993) Apr
  • Iijima, "Helical Microtubules of Graphitic Carbon", Nature 354, 56-58 (1991) no month
  • Lieber et al., "Growth And Structure Of Carbide Nanorods", Materials Research Society, Symposium Proceedings vol. 410, 103-111 (1995) Nov
  • McMahon et al., "On The Growth Mechanism of Silicon Carbide Whiskers", Journal of Materials Science 26, 5655-5663 (1991) no month
  • Ruoff et al., "Single Crystal Metals Encapsulated In Carbon Nanoparticles", Science 259, 346-348 (1993) Jan
  • Stephan et al., "Doping Graphitic and Carbon Nanotube Structures with Boron and Nitrogen", Science 266, 1683-1685 (1994) Dec
  • Weng-Sieh et al., "Synthesis of Bx Cy Nz nanotubeles", Physical Review B, vol. 51, Apr. 1995
  • Wokulski et al., "On The Growth And Morphology of TiCx Whiskers", Journal of Crystal Growth 62, 439-446 (1983) no month
  • Zhou et al., "Production of Silicon Carbide Whiskers From Carbon Nanoclusters", Chemical Physical Letters 222, 233-238 (1994) no mont
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