Patents by Inventor Zhifen Ren

Zhifen Ren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods for producing reinforced carbon nanotubes
    Patent number: 7442414
    Abstract: Methods for producing reinforced carbon nanotubes having a plurality of microparticulate carbide or oxide materials formed substantially on the surface of such reinforced carbon nanotubes composite materials are disclosed. In particular, the present invention provides reinforced carbon nanotubes (CNTs) having a plurality of boron carbide nanolumps formed substantially on a surface of the reinforced CNTs that provide a reinforcing effect on CNTs, enabling their use as effective reinforcing fillers for matrix materials to give high-strength composites. The present invention also provides methods for producing such carbide reinforced CNTs.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: October 28, 2008
    Assignee: The Trustees of Boston College
    Inventors: Zhifen Ren, Jian Guo Wen, Jing Y. Lao, Wenzhi Li
  • Reinforced carbon nanotubes
    Publication number: 20060043649
    Abstract: The present invention relates generally to reinforced carbon nanotubes, and more particularly to reinforced carbon nanotubes having a plurality of microparticulate carbide or oxide materials formed substantially on the surface of such reinforced carbon nanotubes composite materials. In particular, the present invention provides reinforced carbon nanotubes (CNTs) having a plurality of boron carbide nanolumps formed substantially on a surface of the reinforced CNTs that provide a reinforcing effect on CNTs, enabling their use as effective reinforcing fillers for matrix materials to give high-strength composites. The present invention also provides methods for producing such carbide reinforced CNTs.
    Type: Application
    Filed: November 12, 2004
    Publication date: March 2, 2006
    Inventors: Zhifen Ren, Jian Wen, Jing Lao, Wenzhi Li
  • Reinforced carbon nanotubes
    Patent number: 6911260
    Abstract: The present invention relates generally to reinforced carbon nanotubes, and more particularly to reinforced carbon nanotubes having a plurality of microparticulate carbide or oxide materials formed substantially on the surface of such reinforced carbon nanotubes composite materials. In particular, the present invention provides reinforced carbon nanotubes (CNTs) having a plurality of boron carbide nanolumps formed substantially on a surface of the reinforced CNTs that provide a reinforcing effect on CNTs, enabling their use as effective reinforcing fillers for matrix materials to give high-strength composites. The present invention also provides methods for producing such carbide reinforced CNTs.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: June 28, 2005
    Assignee: Trustees of Boston College
    Inventors: Zhifen Ren, Jian Guo Wen, Jing Y. Lao, Wenzhi Li
  • Metal oxide nanostructures with hierarchical morphology
    Publication number: 20040105810
    Abstract: The present invention relates generally to metal oxide materials with varied symmetrical nanostructure morphologies. In particular, the present invention provides metal oxide materials comprising one or more metallic oxides with three-dimensionally ordered nanostructural morphologies, including hierarchical morphologies. The present invention also provides methods for producing such metal oxide materials.
    Type: Application
    Filed: September 11, 2003
    Publication date: June 3, 2004
    Inventors: Zhifen Ren, J.Y. Lao, Debasish Banerjee
  • Reinforced carbon nanotubes
    Publication number: 20030157333
    Abstract: The present invention relates generally to reinforced carbon nanotubes, and more particularly to reinforced carbon nanotubes having a plurality of microparticulate carbide or oxide materials formed substantially on the surface of such reinforced carbon nanotubes composite materials. In particular, the present invention provides reinforced carbon nanotubes (CNTs) having a plurality of boron carbide nanolumps formed substantially on a surface of the reinforced CNTs that provide a reinforcing effect on CNTs, enabling their use as effective reinforcing fillers for matrix materials to give high-strength composites. The present invention also provides methods for producing such carbide reinforced CNTs.
    Type: Application
    Filed: January 10, 2003
    Publication date: August 21, 2003
    Applicant: Trustees of Boston College
    Inventors: Zhifen Ren, Jian Guo Wen, Jing Y. Lao, Wenzhi Li