Patents by Inventor Jason H. Hafner

Jason H. Hafner 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).

  • Patent number: 7959779
    Abstract: This invention relates generally to cutting single-wall carbon nanotubes (SWNT). In one embodiment, the present invention provides for preparations of homogeneous populations of short carbon nanotube molecules by cutting and annealing (reclosing) the nanotube pieces followed by fractionation. The cutting and annealing processes may be carried out on a purified nanotube bucky paper, on felts prior to purification of nanotubes or on any material that contains single-wall nanotubes. In one embodiment, oxidative etching with concentrated nitric acid is employed to cut SWNTs into shorter lengths. The annealed nanotubes may be disbursed in an aqueous detergent solution or an organic solvent for the fractionation. Closed tubes can also be derivatized to facilitate fractionation, for example, by adding solubilizing moieties to the end caps.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: June 14, 2011
    Assignee: William Marsh Rice University
    Inventors: Daniel T. Colbert, Honglie Dai, Jason H. Hafner, Andrew G. Rinzler, Richard E. Smalley, Jie Liu, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7939136
    Abstract: The formation of arrays of fullerene nanotubes is described. A microscopic molecular array of fullerene nanotubes is formed by assembling subarrays of up to 106 fullerene nanotubes into a composite array.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: May 10, 2011
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20110086781
    Abstract: The formation of arrays of fullerene nanotubes is described. A microscopic molecular array of fullerene nanotubes is formed by assembling subarrays of up to 106 fullerene nanotubes into a composite array.
    Type: Application
    Filed: August 22, 2006
    Publication date: April 14, 2011
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20100096265
    Abstract: This invention relates generally to cutting single-wall carbon nanotubes (SWNT). In one embodiment, the present invention provides for preparations of homogeneous populations of short carbon nanotube molecules by cutting and annealing (reclosing) the nanotube pieces followed by fractionation. The cutting and annealing processes may be carried out on a purified nanotube bucky paper, on felts prior to purification of nanotubes or on any material that contains single-wall nanotubes. In one embodiment, oxidative etching with concentrated nitric acid is employed to cut SWNTs into shorter lengths. The annealed nanotubes may be disbursed in an aqueous detergent solution or an organic solvent for the fractionation. Closed tubes can also be derivatized to facilitate fractionation, for example, by adding solubilizing moieties to the end caps.
    Type: Application
    Filed: December 27, 2007
    Publication date: April 22, 2010
    Inventors: Daniel T. Colbert, Honglie Dai, Jason H. Hafner, Andrew G. Rinzler, Richard E. Smalley, Jie Liu, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7655302
    Abstract: This invention relates generally to carbon fiber produced from fullerene nanotube arrays. In one embodiment, the present invention involves a macroscopic carbon fiber comprising at least 106 fullerene nanotubes in generally parallel orientation.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: February 2, 2010
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7632569
    Abstract: This invention relates generally to forming an array of fullerene nanotubes. In one embodiment, a macroscopic molecular array is provided comprising at least about 106 fullerene nanotubes in generally parallel orientation and having substantially similar lengths in the range of from about 5 to about 500 nanometers.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: December 15, 2009
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20090169463
    Abstract: This invention relates generally to forming an array of fullerene nanotubes. In one embodiment, a macroscopic molecular array is provided comprising at least about 106 fullerene nanotubes in generally parallel orientation and having substantially similar lengths in the range of from about 5 to about 500 nanometers.
    Type: Application
    Filed: August 22, 2006
    Publication date: July 2, 2009
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7510695
    Abstract: This invention relates generally to forming a patterned array of fullerene nanotubes. In one embodiment, a nanoscale array of microwells is provided on a substrate; a metal catalyst is deposited in each microwells; and a stream of hydrocarbon or CO feedstock gas is directed at the substrate under conditions that effect growth of fullerene nanotubes from each microwell.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: March 31, 2009
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7481989
    Abstract: This invention relates generally to cutting fullerene nanotubes. In one embodiment, the present invention provides for preparation of homogeneous populations of short fullerene nanotubes by cutting and annealing (reclosing) the nanotube pieces followed by fractionation. The cutting and annealing processes may be carried out on a purified nanotube bucky paper, on felts prior to purification of nanotubes or on any material that contains fullerene nanotubes. In one embodiment, oxidative etching with concentrated nitric acid is employed to cut fullerene nanotubes into shorter lengths. The annealed nanotubes may be disbursed in an aqueous detergent solution or an organic solvent for the fractionation. Closed tubes can also be derivatized to facilitate fractionation, for example, by adding solubilizing moieties to the end caps.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: January 27, 2009
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20090004094
    Abstract: This invention relates generally to cutting fullerene nanotubes. In one embodiment, the present invention provides for preparation of homogeneous populations of short fullerene nanotubes by cutting and annealing (reclosing) the nanotube pieces followed by fractionation. The cutting and annealing processes may be carried out on a purified nanotube bucky paper, on felts prior to purification of nanotubes or on any material that contains fullerene nanotubes. In one embodiment, oxidative etching with concentrated nitric acid is employed to cut fullerene nanotubes into shorter lengths. The annealed nanotubes may be disbursed in an aqueous detergent solution or an organic solvent for the fractionation. Closed tubes can also be derivatized to facilitate fractionation, for example, by adding solubilizing moieties to the end caps.
    Type: Application
    Filed: August 22, 2006
    Publication date: January 1, 2009
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20080311025
    Abstract: This invention relates generally to forming a patterned array of fullerene nanotubes. In one embodiment, a nanoscale array of microwells is provided on a substrate; a metal catalyst is deposited in each microwells; and a stream of hydrocarbon or CO feedstock gas is directed at the substrate under conditions that effect growth of fullerene nanotubes from each microwell.
    Type: Application
    Filed: August 22, 2006
    Publication date: December 18, 2008
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20080224100
    Abstract: This invention relates generally to a method for producing composites of fullerene nanotubes and compositions thereof. In one embodiment, the present invention involves a method of producing a composite material that includes a matrix and a fullerene nanotube material embedded within said matrix. In another embodiment, a method of producing a composite material containing fullerene nanotube material is disclosed. This method includes the steps of preparing an assembly of a fibrous material; adding the fullerene nanotube material to the fibrous material; and adding a matrix material precursor to the fullerene nanotube material and the fibrous material.
    Type: Application
    Filed: August 22, 2006
    Publication date: September 18, 2008
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7419624
    Abstract: This invention relates generally to a method for producing composites of fullerene nanotubes and compositions thereof. In one embodiment, the present invention involves a method of producing a composite material that includes a matrix and a fullerene nanotube material embedded within said matrix. In another embodiment, a method of producing a composite material containing fullerene nanotube material is disclosed. This method includes the steps of preparing an assembly of a fibrous material; adding the fullerene nanotube material to the fibrous material; and adding a matrix material precursor to the fullerene nanotube material and the fibrous material.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: September 2, 2008
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7419651
    Abstract: This invention relates generally to a method for producing self-assembled objects comprising fullerene nanotubes and compositions thereof. In one embodiment, the present invention involves a three-dimensional structure of derivatized fullerene nanotubes that spontaneously form. It includes several components having multiple derivatives brought together to assemble into the three-dimensional structure. In another embodiment, objects may be obtained by bonding functionally-specific agents (FSAs) to groups of nanotubes, enabling them to form into structures. The bond selectivity of FSAs allow selected nanotubes of a particular size or kind to assemble together and inhibit the assembling of unselected nanotubes that may also be present.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: September 2, 2008
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7390767
    Abstract: This invention relates generally to a method for producing fullerene nanotube catalyst supports and compositions thereof. In one embodiment, fullerene nanotubes or fullerene nanotube structures can be employed as the support material. A transition metal catalyst is added to the fullerene nanotubes. In a preferred embodiment, the catalyst metal cluster is deposited on the open nanotube end by a docking process that insures optimum location for the subsequent growth reaction. The metal atoms may be subjected to reductive conditions.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: June 24, 2008
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7390477
    Abstract: This invention relates generally to a fullerene nanotube composition. The fullerene nanotubes may be in the form of a felt, such as a bucky paper. Optionally, the fullerene nanotubes may be derivatized with one or more functional groups. Devices employing the fullerene nanotubes of this invention are also disclosed.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: June 24, 2008
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20080107586
    Abstract: This invention relates generally to a method for producing fullerene nanotube catalyst supports and compositions thereof. In one embodiment, fullerene nanotubes or fullerene nanotube structures can be employed as the support material. A transition metal catalyst is added to the fullerene nanotubes. In a preferred embodiment, the catalyst metal cluster is deposited on the open nanotube end by a docking process that insures optimum location for the subsequent growth reaction. The metal atoms may be subjected to reductive conditions.
    Type: Application
    Filed: August 22, 2006
    Publication date: May 8, 2008
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Publication number: 20080089830
    Abstract: This invention relates generally to a fullerene nanotube composition. The fullerene nanotubes may be in the form of a felt, such as a bucky paper. Optionally, the fullerene nanotubes may be derivatized with one or more functional groups. Devices employing the fullerene nanotubes of this invention are also disclosed.
    Type: Application
    Filed: August 22, 2006
    Publication date: April 17, 2008
    Applicant: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7357906
    Abstract: The invention relates generally to dispersing and fractionating single-wall carbon nanotubes, which can be derivatized to facilitate fractionation, for example, by adding solubilizing moieties to the nanotubes.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: April 15, 2008
    Assignee: William Marsh Rice University
    Inventors: Daniel T. Colbert, Hongjie Dai, Jason H. Hafner, Andrew G. Rinzler, Richard E. Smalley, Jie Liu, Kenneth A. Smith, Ting Guo, Pavel Nikolaev, Andreas Thess
  • Patent number: 7354563
    Abstract: This invention relates generally to a fullerene nanotube purification process and more particularly to a purification process that comprises heating the fullerene nanotube-containing felt under oxidizing conditions to remove the amorphous carbon deposits and other contaminating materials. In a preferred mode of this purification procedure, the felt is heated in an aqueous solution of an inorganic oxidant, such as nitric acid, a mixture of hydrogen peroxide and sulfuric acid, or a potassium permanganate. Preferably, fullerene nanotube-containing felts are refluxed in an aqueous solution of an oxidizing acid at a concentration high enough to etch away amorphous carbon deposits within a practical time frame, but not so high that the fullerene nanotube material will be etched to a significant degree. When material having a high proportion of fullerene nanotubes is purified, the preparation produced will be enriched in fullerene nanotubes, so that the fullerene nanotubes are substantially free of other material.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: April 8, 2008
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Hongjie Dai, Jie Liu, Andrew G. Rinzler, Jason H. Hafner, Ken Smith, Ting Guo, Pavel Nikolaev, Andreas Thess