Patents Examined by Stanley S. Silverman
  • Patent number: 7781370
    Abstract: A spherical activated carbon is produced from a starting pitch obtainable from a heavy hydrocarbon oil, such as petroleum tar, coal tar or ethylene, through a moderate process. The starting pitch has a softening point of at least 150° C., a toluene-insoluble content of at least 40% and a property of retaining optical isotropy even after being heated at 430° C. for 1 hour. The starting pitch is converted into a porous spherical pitch, which is then infusibilized, carbonized and activated to provide a spherical activated carbon.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: August 24, 2010
    Assignee: Kureha Corporation
    Inventors: Naohiro Sonobe, Ikuo Seo
  • Patent number: 7776778
    Abstract: X-ray amorphous carbon is formed by evaporating carbonic material. The evaporation of carbonic material is conducted in a helium atmosphere at a supply energy flow in the range of 50 to 300 W/mm2. The energy is generated, for example, by means of an electric arc. The X-ray amorphous carbon has a starting temperature of an air oxidation, Tso, ?320° C.; a temperature of maximal rate of an air oxidation, Tomr, ?590° C.; a temperature of end of an air oxidation, Teo, ?630° C.; an initial rate of non-catalytic hydrogenolysis by molecular hydrogen at 700° C., Vhin, ?2.08% mass of carbon/h. Upon contact in a solution, 1 g of X-ray amorphous carbon consumes an amount equal to or greater than 16 mmole of MnO4? ions. Catalysts based on the X-ray amorphous carbon are used in hydrocarbon dehydrogenation and dehydrocyclization reactions.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: August 17, 2010
    Inventors: Sergey Dmitrievich Kusch, Sergey Viktorovich Kusnetsov, Aleksey Jurievich Modnev
  • Patent number: 7771690
    Abstract: Methods for heating a solid material comprising a granular material are provided. Dust is removed from the granular material before it is heated. The dust is injected into the exhaust gas from the heater. The heated dust is recovered and combined with the heated granular material.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: August 10, 2010
    Assignee: Solvay Chemicals, Inc.
    Inventors: Alain Vandendoren, William E. Stuble
  • Patent number: 7771697
    Abstract: A method is disclosed whereby a functional nanomaterial such as a monolayer carbon nanotube, a monolayer boron nitride nanotube, a monolayer silicon carbide nanotube, a multilayer carbon nanotube with the number of layers controlled, a multilayer boron nitride nanotube with the number of layers controlled, a multilayer silicon carbide nanotube with the number of layers controlled, a metal containing fullerene, and a metal containing fullerene with the number of layers controlled is produced at a high yield. According to the method, when a multilayer carbon nanotube (3) is formed by a chemical vapor deposition or a liquid phase growth process, an endothermic reaction aid (H2S) is introduced in addition to a primary reactant (CH4, H2) in the process to form a monolayer carbon nanotube (4).
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: August 10, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Tadashi Mitsui, Takashi Sekiguchi, Mika Gamo, Yafei Zhang, Toshihiro Ando
  • Patent number: 7771696
    Abstract: A composition is provided in which carbon nanofibers are functionalized with at least one moiety where the moiety or moieties comprise at least one bivalent radical. The composition can include a nanocomposite, such as polyimide films. Methods for making functionalized carbon nanofibers and nanocomposites are also provided.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: August 10, 2010
    Assignee: University of Dayton
    Inventors: David H. Wang, Loon-Seng Tan
  • Patent number: 7771692
    Abstract: A mode of combustion and multi-component reactor to accomplish this mode of combustion are disclosed which produces fullerenes and fullerenic material by combustion. This mode consists of de-coupling an oxidation region of a flame from a post-flame region, thus giving greater control over operating parameters, such as equivalence ratio, temperature, and pressure; allows conditions of the operating parameters of the combustion reaction to be attained which would not be easily attained by conventional methods; and offers the ability to more easily stabilize the combustion reactions to allow for higher throughputs of fuel and oxidant. Several embodiments of a primary zone of a multi-component reactor are also disclosed. Said primary zone serves as the oxidation region, operates on the principle of providing recycle to the reacting combustion mixture, and which may be operated as approximately a well-mixed reactor.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: August 10, 2010
    Assignee: Nano-C, Inc.
    Inventors: Jack B. Howard, David F. Kronholm, Anthony J. Modestino, Henning Richter
  • Patent number: 7763230
    Abstract: The present invention relates to a simple method for the synthesis of fullerenes using a mixture of liquid metallorganic precursors and liquid organic hydrocarbon solvents wherein the mixture is injected in the form of droplets into a multiple heated zone reactor tube in which the droplets are thermally decomposed and fullerenes are formed. The process is useful for the formation of all types of fullerenes, and in particular yields multi-walled carbon nanotubes (MWNTs) with low defect density and controllable wt % of metal impurity atoms. In particular, a method is disclosed that produces as-grown MWNTs with less than 5 wt % metal impurity atoms. Large classes of metallorganic precursors suitable for use in the process are also identified.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: July 27, 2010
    Assignee: Nanotech Innovations, LLC
    Inventors: Aloysius F. Hepp, Jerry D. Harris
  • Patent number: 7763229
    Abstract: Disclosed are methods for isolating and purifying single wall carbon nanotubes from contaminant matrix material, methods for forming arrays of substantially aligned nanotubes, and products and apparatus comprising a plurality of nanotube structures.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: July 27, 2010
    Assignee: GB Tech, Inc.
    Inventors: Pavel Nikolaev, Sivaram Arepalli, Mark S. F. Clarke, Daniel L. Feeback
  • Patent number: 7759289
    Abstract: In activated carbon obtained by subjecting a carbonaceous material to an activation treatment, the overall content of alkali metals is set at 100 ppm or less, or the overall content of heavy metals is set at 20 ppm or less and the overall content of alkali metals is set at 200 ppm or less. In cases where such activated carbon is used as a raw material in electronic devices, the formation of dendrites by the reductive deposition of alkali metals or heavy metals tends not to occur, so that problems such as short-circuiting or the like tend not to arise, and a good rate of self-discharge retention is shown.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: July 20, 2010
    Assignees: Kuraray Chemical Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hideharu Iwasaki, Nozomu Sugo, Mitsunori Hitomi, Shushi Nishimura, Takeshi Fujino, Shigeki Oyama, Yuji Kawabuchi
  • Patent number: 7754180
    Abstract: A single crystal diamond grown by microwave plasma chemical vapor deposition annealed at pressures in excess of 4.0 GPa and heated to temperature in excess of 1500 degrees C. that has a hardness of greater than 120 GPa. A method for manufacture a hard single crystal diamond includes growing a single crystal diamond and annealing the single crystal diamond at pressures in excess of 4.0 GPa and a temperature in excess of 1500 degrees C. to have a hardness in excess of 120 GPa.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: July 13, 2010
    Assignee: Carnegie Institution of Washington
    Inventors: Russell J. Hemley, Ho-Kwang Mao, Chih-shiue Yan
  • Patent number: 7754183
    Abstract: The present invention discloses a relatively simple CVD method for forming specifically tailored carbon-based nanostructures. In general, the method is a chemical vapor deposition method in which at least a portion of the precursor materials are provided as a liquid at atmospheric conditions. The precursor materials include at least one carbon source and at least one catalyst source. Optionally, the precursor materials can also include one or more dopant sources. The carbon source and the optional dopant source can be injected as liquids into the system, and the liquid catalyst source can be either injected into the system or located on a substrate in the reactor prior to the process. Very high yield of nanostructures exhibiting particular characteristics can be attained by the process.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: July 13, 2010
    Assignee: Clemson University Research Foundation
    Inventors: Gayatri D. Keskar, Wei Wang, Apparao M. Rao
  • Patent number: 7749479
    Abstract: The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. The method comprises advancing a precursor fiber through an oxidation oven wherein the fiber is subjected to controlled stretching in an oxidizing atmosphere in which tension loads are distributed amongst a plurality of passes through the oxidation oven, which permits higher cumulative stretches to be achieved. The method also includes subjecting the fiber to controlled stretching in two or more of the passes that is sufficient to cause the fiber to undergo one or more transitions in each of the two or more passes. The invention is also directed to an oxidation oven having a plurality of cooperating drive rolls in series that can be driven independently of each other so that the amount of stretch applied to the oven in each of the plurality of passes can be independently controlled.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: July 6, 2010
    Assignee: Hexcel Corporation
    Inventor: Carlos A. Léon y Léon
  • Patent number: 7731929
    Abstract: Methods of aligning single walled carbon nanotube structures into selected orientations for a variety of different applications are achieved by initially dispersing the nanotube structures in aqueous solutions utilizing a suitable dispersal agent. The dispersal agent coats each individual nanotube structure in solution. The dispersal agent may be substituted with a suitable functional group that reacts with a corresponding binding site. Dispersed nanotube structures coated with substituted dispersal agents are exposed to a selected array of binding sites such that the nanotubes align with the binding sites due to the binding of the substituted functional groups with such binding sites. Alternatively, crystalline nanotube material is formed upon deposition of dispersed nanotube structures within solution into channels disposed on the surface of the substrate.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: June 8, 2010
    Assignee: Battelle Memorial Institute
    Inventor: Mark S. F. Clarke
  • Patent number: 7731931
    Abstract: This invention relates to adsorbents useful for storing hydrogen and other small molecules, and to methods for preparing such adsorbents. The adsorbents are produced by heating carbonaceous materials to a temperature of at least 900° C. in an atmosphere of hydrogen.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: June 8, 2010
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mark Brandon Shiflett, Subramaniam Sabesan, Steven Raymond Lustig, Pratibha Laxman Gai
  • Patent number: 7723262
    Abstract: Carbon cryogels, methods for making the carbon cryogels, methods for storing a gas using the carbon cryogels, and devices for storing and delivering a gas using the carbon cryogels.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: May 25, 2010
    Assignees: EnerG2, LLC, University of Washington
    Inventors: Aaron Feaver, Guozhong Cao
  • Patent number: 7718230
    Abstract: The present invention provides a method and apparatus for transferring an array of oriented carbon nanotubes from a first surface to a second surface by providing the array of oriented carbon nanotubes on the first surface within a vacuum chamber, providing the second surface within the vacuum chamber separate from the first surface, and applying an electric potential between the first surface and the second surface such that the array of oriented carbon nanotubes are sublimed from the first surface and re-deposited on the second surface.
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: May 18, 2010
    Assignee: Board of Regents, The University of Texas System
    Inventors: Anvar A. Zakhidov, Rashmi Nanjundaswamy, Sergey Li, Alexander Zakhidov, Mei Zhang, Ray H. Baughman
  • Patent number: 7713509
    Abstract: A method of forming nitrogen-doped or other Group V-doped single-walled nanotubes including: forming a catalyst metal layer on a substrate; loading a substrate having the catalyst metal layer into a reaction chamber; forming an H2O or other plasma atmosphere in a reaction chamber; and forming the nitrogen-doped or other Group V-doped carbon nanotubes on the catalyst metal layer by supplying a carbon or other Group IV precursor and a nitrogen or other Group V precursor into a reaction chamber where a chemical reaction therebetween is generated in the H2O or other plasma atmosphere.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: May 11, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun-Ju Bae, Yo-Sep Min, Wan-Jun Park
  • Patent number: 7709415
    Abstract: Activated carbon useful as polarizable electrode material for an electric double-layer capacitor can be obtained by mixing a carbonaceous material and an alkali metal hydroxide while maintaining a solid state, granulating the obtained mixture while maintaining its solid state, dehydrating the obtained granulated substance while maintaining its solid state, and subjecting the granulated dehydration product obtained in the dehydration step to an activation treatment. The preferred pressure of the granulation treatment in the granulation step is 0.01 to 300 Torr, and the preferred temperature of the granulation treatment is 90 to 140° C. The preferred pressure of the dehydration treatment in the dehydration step is 0.01 to 10 Torr, and the preferred temperature of the dehydration treatment is 200 to 400° C.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: May 4, 2010
    Assignees: Kuraray Chemical Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Nozomu Sugo, Hideharu Iwasaki, Takanori Kitamura, Tatsuo Morotomi, Tsuyoshi Kowaka, Teruhiro Okada, Shushi Nishimura, Takeshi Fujino, Shigeki Oyama, Yuji Kawabuchi
  • Patent number: 7704481
    Abstract: A method for producing vapor-grown carbon fibers, comprising contacting a carbon compound with a catalyst and/or a catalyst precursor compound in a heating zone, wherein the carbon compound is a combination of compounds respectively selected from carbon compounds having no benzene ring structure within molecule [Group (a)] and from aromatic compounds [Group (b)], these compounds satisfy the conditions that, in the raw materials, (number of atoms of element as catalyst)/(number of all carbon atoms) & equals; 0.000005 to 0.0015 and [number of carbon atoms contained in compound of Group (a)]/[number of carbon atoms contained in compound of Group (a)+number of carbon atoms contained in compound of Group (b)] & equals; 0.001 to 0.9, and the residence time in the temperature region of 600° C. or more is 30 seconds or less.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: April 27, 2010
    Assignee: Showa Denko K.K.
    Inventors: Tomoyoshi Higashi, Eiji Kambara, Katsuyuki Tsuji
  • Patent number: 7704480
    Abstract: A carbon nanotube yarn includes a number of carbon nanotube yarn strings bound together, and each of the carbon nanotube yarn strings includes a number of carbon nanotube bundles that are joined end to end by van der Waals attractive force, and each of the carbon nanotube bundles includes a number of carbon nanotubes substantially parallel to each other. A method for making the carbon nanotube yarn includes soaking the at least one carbon nanotube yarn string drawn out from a carbon nanotube array in an organic solvent to shrink it and then collecting it.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: April 27, 2010
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Kai-Li Jiang, Shou-Shan Fan