Patents by Inventor Chad Huffman
Chad Huffman 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).
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Patent number: 7780939Abstract: This invention is directed to chemical derivatives of carbon nanotubes wherein the carbon nanotubes have a diameter up to 3 nm. In one embodiment, this invention also provides a method for preparing carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single-wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents are dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: GrantFiled: June 13, 2006Date of Patent: August 24, 2010Assignee: William Marsh Rice UniversityInventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Patent number: 7527780Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: GrantFiled: March 16, 2001Date of Patent: May 5, 2009Assignee: William Marsh Rice UniversityInventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Publication number: 20070098621Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: ApplicationFiled: June 13, 2006Publication date: May 3, 2007Applicant: William Marsh Rice UniversityInventors: John Margrave, Edward Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard Smalley
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Publication number: 20050169830Abstract: The present invention is directed to the creation of macroscopic materials and objects comprising aligned nanotube segments. The invention entails aligning single-wall carbon nanotube (SWNT) segments that are suspended in a fluid medium and then removing the aligned segments from suspension in a way that macroscopic, ordered assemblies of SWNT are formed. The invention is further directed to controlling the natural proclivity of nanotube segments to self assemble into ordered structures by modifying the environment of the nanotubes and the history of that environment prior to and during the process. The materials and objects are “macroscopic” in that they are large enough to be seen without the aid of a microscope or of the dimensions of such objects.Type: ApplicationFiled: January 16, 2004Publication date: August 4, 2005Applicant: William Marsh Rice UniversityInventors: Smalley Richard, Daniel Colbert, Kenneth Smith, Deron Walters, Michael Casavant, Chad Huffman, Boris Yakobson, Robert Hauge, Rajesh Saini, Wan-Ting Chiang, Xiao Qin
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Patent number: 6875412Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: GrantFiled: March 16, 2001Date of Patent: April 5, 2005Assignee: William Marsh Rice UniversityInventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Patent number: 6841139Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: GrantFiled: March 16, 2001Date of Patent: January 11, 2005Assignee: William Marsh Rice UniversityInventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Patent number: 6835366Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: GrantFiled: March 16, 2001Date of Patent: December 28, 2004Assignee: William Marsh Rice UniversityInventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Patent number: 6827918Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: GrantFiled: March 16, 2001Date of Patent: December 7, 2004Assignee: William Marsh Rice UniversityInventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Patent number: 6645455Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: GrantFiled: March 16, 2001Date of Patent: November 11, 2003Assignee: William Marsh Rice UniversityInventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Publication number: 20020110513Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: ApplicationFiled: March 16, 2001Publication date: August 15, 2002Inventors: John L. Margrave, Edward T. Mickelson, Robert Hague, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Publication number: 20020086124Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: ApplicationFiled: March 16, 2001Publication date: July 4, 2002Inventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Publication number: 20020004028Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: ApplicationFiled: March 16, 2001Publication date: January 10, 2002Inventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Publication number: 20010041160Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: ApplicationFiled: March 16, 2001Publication date: November 15, 2001Inventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert
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Publication number: 20010031900Abstract: This invention is directed to making chemical derivatives of carbon nanotubes and to uses for the derivatized nanotubes, including making arrays as a basis for synthesis of carbon fibers. In one embodiment, this invention also provides a method for preparing single wall carbon nanotubes having substituents attached to the side wall of the nanotube by reacting single wall carbon nanotubes with fluorine gas and recovering fluorine derivatized carbon nanotubes, then reacting fluorine derivatized carbon nanotubes with a nucleophile. Some of the fluorine substituents are replaced by nucleophilic substitution. If desired, the remaining fluorine can be completely or partially eliminated to produce single wall carbon nanotubes having substituents attached to the side wall of the nanotube. The substituents will, of course, be dependent on the nucleophile, and preferred nucleophiles include alkyl lithium species such as methyl lithium.Type: ApplicationFiled: March 16, 2001Publication date: October 18, 2001Inventors: John L. Margrave, Edward T. Mickelson, Robert Hauge, Peter Boul, Chad Huffman, Jie Liu, Richard E. Smalley, Ken Smith, Daniel T. Colbert