Patents Assigned to Hyperion Catalysis International, Inc.
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Patent number: 6432866Abstract: This invention relates to rigid porous carbon structures and to methods of making same. The rigid porous structures have a high surface area which are substantially free of micropores. Methods for improving the rigidity of the carbon structures include causing the nanofibers to form bonds or become glued with other nanofibers at the fiber intersections. The bonding can be induced by chemical modification of the surface of the nanofibers to promote bonding, by adding “gluing” agents and/or by pyrolyzing the nanofibeirs to cause fusion or bonding at the interconnect points.Type: GrantFiled: February 9, 2000Date of Patent: August 13, 2002Assignee: Hyperion Catalysis International, Inc.Inventors: Howard Tennent, David Moy, Chun-Ming Niu
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Publication number: 20020095860Abstract: Improved fuel compositions containing carbon nanotubes in from 0.01% to 30.0% by weight of fuel have improved burn rate and other valuable properties. Improved lubricant compositions containing carbon nanotubes in from 0.01 to 20.0% by weight of lubricant have improved viscosity and other valuable properties.Type: ApplicationFiled: March 15, 2002Publication date: July 25, 2002Applicant: Hyperion Catalysis International, Inc.Inventors: David Moy, Chunming Niu, Howard Tennent, Robert Hoch
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Patent number: 6423288Abstract: A process for preparing carbon fibrils by contacting a source of carbon with a supported catalyst that includes at least one multivalent transition metal having a size of about 35 to 700 A deposited on an inorganic substrate having a size of up to about 400 microns.Type: GrantFiled: April 26, 2001Date of Patent: July 23, 2002Assignee: Hyperion Catalysis International, Inc.Inventors: W. Harry Mandeville, Larry K. Truesdale, Howard Tennent
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Patent number: 6419717Abstract: Improved fuel compositions containing carbon nanotubes in from 0.01% to 30.0% by weight of fuel have improved bum rate and other valuable properties. Improved lubricant compositions containing carbon nanotubes in from 0.01 to 20.0% by weight of lubricant have improved viscosity and other valuable properties.Type: GrantFiled: March 16, 2001Date of Patent: July 16, 2002Assignee: Hyperion Catalysis International, Inc.Inventors: David Moy, Chunming Niu, Howard Tennent, Robert Hoch
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Publication number: 20020085974Abstract: A method of oxidizing the surface of carbon microfibers that includes contacting the microfibers with an oxidizing agent that includes sulfuric acid and potassiaum chlorate under reaction conditions sufficient to oxidize the surface. The invention also features a method of decreasing the length of carbon microfibers that includes contacting the microfibers with an oxidizing agent under reaction conditions sufficient to decrease the length.Type: ApplicationFiled: January 8, 2002Publication date: July 4, 2002Applicant: Hyperion Catalysis International, Inc.Inventors: Robert C. Bening, Thomas J. McCarthy
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Patent number: 6414836Abstract: Graphitic nanofibers, which include tubular fullerenes (commonly called “buckytubes”), nanotubes and fibrils, which are functionalized by chemical substitution, are used as electrodes in electrochemical capacitors. The graphitic nanofiber based electrode increases the performance of the electrochemical capacitors.Type: GrantFiled: October 1, 1999Date of Patent: July 2, 2002Assignee: Hyperion Catalysis International, IncInventors: Howard Tennent, David Moy, Chun-Ming Niu
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Patent number: 6403696Abstract: A composite that includes an elastomer matrix into which carbon fibrils are incorporated. The fibrils are characterized as having a morphology consisting of tubes that are free of a continuous thermal carbon overcoat and have graphitic layers that are substantially parallel to the fibril axis, or as having a crystalline graphitic structure and a morphology defined by a fishbone-like arrangement of the graphite layers along the fibril axis.Type: GrantFiled: April 11, 1995Date of Patent: June 11, 2002Assignee: Hyperion Catalysis International, Inc.Inventors: James J. Barber, Carl Snyder
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Patent number: 6375917Abstract: A process for preparing carbon fibrils by contacting a source of carbon with a supported catalyst that includes at least one multivalent transition metal having a size of about to 700 A deposited on an inorganic substrate having a size up to about 400 microns.Type: GrantFiled: June 6, 1995Date of Patent: April 23, 2002Assignee: Hyperion Catalysis International, Inc.Inventors: W. Harry Mandeville, Larry K. Truesdale, Howard Tennent
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Patent number: 6358878Abstract: A fibril aggregate that includes a multiplicity of carbon fibrils whose longitudinal axes have substantially the same relative orientation, each of the fibrils characterized as having graphitic layers that are substantially parallel to its longitudinal axis and being free of a continuous thermal carbon overcoat, and a method of preparing such aggregates.Type: GrantFiled: May 23, 1995Date of Patent: March 19, 2002Assignee: Hyperion Catalysis International, Inc.Inventors: David Moy, Asif Chishti
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Publication number: 20010036549Abstract: A process for preparing carbon fibrils by contacting a source of carbon with a supported catalyst that includes at least one multivalent transition metal having a size of about 35 to 700 A deposited on an inorganic substrate having a size of up to about 400 microns.Type: ApplicationFiled: April 26, 2001Publication date: November 1, 2001Applicant: Hyperion Catalysis International, Inc.Inventors: W. Harry Mandeville, Larry K. Truesdale, Howard Tennent
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Patent number: 6294144Abstract: An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and an aluminum and/or magnesium compound, optionally in the presence of carbon particles or carbon fibril aggregates. The catalyst may also be made by incorporating a compound of a fibril-forming metal onto magnesia particles in carbon particles or carbon fibril aggregates. The catalysts, methods of using them to form carbon fibrils and those carbon fibrils are also disclosed.Type: GrantFiled: June 5, 1995Date of Patent: September 25, 2001Assignee: Hyperion Catalysis International, Inc.Inventors: David Moy, Asif Chishti
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Publication number: 20010014307Abstract: An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and an aluminum and/or magnesium compound, optionally in the presence of carbon particles or carbon fibril aggregates. The catalyst may also be made by incorporating a compound of a fibril-forming metal onto magnesia particles in carbon particles or carbon fibril aggregates. The catalysts, methods of using them to form carbon fibrils and those carbon fibrils are also disclosed.Type: ApplicationFiled: February 14, 2001Publication date: August 16, 2001Applicant: Hyperion Catalysis International, Inc.Inventors: David Moy, Asif Chishti
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Patent number: 6248478Abstract: An improved battery having an anode, a cathode that includes a chemically reducible material into which is incorporated an amount of electrically conductive carbon microfibers sufficient to enhance the electrical conductivity of said chemically reducible material, and an electrolyte.Type: GrantFiled: May 31, 1995Date of Patent: June 19, 2001Assignee: Hyperion Catalysis International, Inc.Inventors: Stephen O. Friend, Jaspard Harvey Atkins, Howard G. Tennent, Robert Hausslein
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Patent number: 6221330Abstract: A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, O, N, S or Cl as hetero atoms, optionally admixed with hydrogen, and a gas phase metal containing compound which is unstable under reaction conditions for said decomposition, and which forms a metal containing catalyst which acts as a decomposition catalyst under reaction conditions; and then conducting said decomposition reaction under decomposition reaction conditions, thereby producing said nanotubes.Type: GrantFiled: August 4, 1997Date of Patent: April 24, 2001Assignee: Hyperion Catalysis International Inc.Inventors: David Moy, Asif Chishti
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Patent number: 6203814Abstract: Graphitic nanotubes, which includes tubular fullerenes (commonly called “buckytubes”) and fibrils, which are functionalized by chemical substitution or by adsorption of functional moieties. More specifically the invention relates to graphitic nanotubes which are uniformly or non-uniformly substituted with chemical moieties or upon which certain cyclic compounds are adsorbed and to complex structures comprised of such functionalized fibrils linked to one another. The invention also relates to methods of introducing functional groups onto the surface of such fibrils.Type: GrantFiled: December 8, 1994Date of Patent: March 20, 2001Assignee: Hyperion Catalysis International, Inc.Inventors: Alan Fisher, Robert Hoch, David Moy, Chunming Niu, Naoya Ogata, Howard Tennent, Thomas McCarthy
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Patent number: 6205016Abstract: Composite electrodes including carbon nanofibers (fibrils) and an electrochemically active material are provided for use in electrochemical capacitors. The fibril composite electrodes exhibit high conductivity, improved efficiency of active materials, high stability, easy processing, and increase the performance of the capacitor. A method for producing the composite electrodes for use in electrochemical capacitors is also provided.Type: GrantFiled: June 4, 1997Date of Patent: March 20, 2001Assignee: Hyperion Catalysis International, Inc.Inventor: Chun-Ming Niu
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Patent number: 6184280Abstract: An electrically conductive polymer composition comprises a moldable organic polymer having hollow carbon microfibers and an electrically conductive white powder uniformly dispersed therein, the carbon fibers being present in an amount of 0.01 wt. % to less than 2 wt. % and the electrically conductive white powder being present in an amount of 2.5-40 wt. %, each percent range based on the total weight of the composition, the amounts of carbon microfibers and white powder being sufficient to simultaneously impart the desired electrical conductivity to the composition and white pigmentation to the composition.Type: GrantFiled: May 19, 1998Date of Patent: February 6, 2001Assignees: Mitsubishi Materials Corporation, Hyperion Catalysis International, Inc.Inventor: Daisuke Shibuta
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Patent number: 6165729Abstract: Electrochemiluminescent assay methods for determining an analyte of interest, which methods include forming one or more compositions which include, in the aggregate, (a) a sample to be tested for the analyte of interest, (b) a component capable of specifically binding with the analyte, (c) a label reagent which, when oxidized, is capable of electrochemiluminescence, (d) an amine which, when oxidized, forms a reducing agent, and (e) an electrolyte solution; subjecting such a composition containing the sample to conditions sufficient for specific binding to occur between the analyte of interest, if present, and one or more of the other components in the composition; thereafter, a composition containing the label reagent and amine, and reflecting the outcome of applying the aforementioned binding conditions, is exposed to conditions, such that both the label reagent and the amine are oxidized, the amine forms a reducing agent which interacts with the label reagent, electrochemiluminescence occurs, and the lumineType: GrantFiled: April 15, 1994Date of Patent: December 26, 2000Assignee: Hyperion Catalysis International, Inc.Inventors: Jonathan Kent Leland, Michael Joseph Powell
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Patent number: 6159892Abstract: A supported catalyst comprising a carbon fibril aggregate and a catalytically effective amount of a catalyst supported therein, a process for performing a catalytic reaction in fluid phase using the supported catalyst and a process for making the supported catalyst are disclosed.Type: GrantFiled: May 23, 1995Date of Patent: December 12, 2000Assignee: Hyperion Catalysis International, Inc.Inventors: David Moy, Robert Hoch
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Patent number: 6113819Abstract: The invention relates to an interpenetrating network of carbon fibrils and a polymer, which comprises a rigidized, three-dimensional macroscopic assemblage of a multiplicity of randomly oriented carbon fibrils and an innerpenetrating mass of an organic polymer. The invention also relates to methods of making and using such innerpenetrating networks.Type: GrantFiled: August 5, 1999Date of Patent: September 5, 2000Assignee: Hyperion Catalysis International, Inc.Inventors: Howard G. Tennent, Chun Ming Niu, Robert Hoch, Alan B. Fischer