Fullerene Composition Patents (Class 423/DIG40)
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Patent number: 6090363Abstract: Method of making carbon nanotubes open on at least one end wherein capped nanotubes are treated with an oxidizing acid such as nitric acid. The treatment is effective to open at least 50% of the nanotubes on at least one end.Type: GrantFiled: April 10, 1997Date of Patent: July 18, 2000Assignee: ISIS Innovation LimitedInventors: Malcolm L. H. Green, Shik C. Tsang
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Patent number: 6002035Abstract: The present invention relates to a novel fullerene-containing metallocene. Such a fullerene-containing metallocene can be used as the catalyst for preparing olefin polymers.Type: GrantFiled: May 4, 1998Date of Patent: December 14, 1999Assignee: Chinese Petroleum CorporationInventors: Long Y. Chiang, Taizoon A. Canteenwala
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Patent number: 5951832Abstract: After an ultrafine particle is disposed on a giant fullerene by driving the ultrafine particle using an electron beam, the ultrafine particle is enclosed in a core hollow portion of the giant fullerene, by contracting the giant fullerene with the electron beam irradiation. Or a metal ultrafine particle composed of an active metal is enclosed in the core hollow portion of the giant fullerene, by irradiating a high energy beam such as the electron beam to an amorphous carbon including the active metal to form the giant fullerene in an irradiated portion, and by contracting the giant fullerene with the irradiation of the high energy beam.Type: GrantFiled: October 6, 1998Date of Patent: September 14, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Shun-ichiro Tanaka, Bing She Xu
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Patent number: 5919429Abstract: After an ultrafine particle is disposed on a giant fullerene by driving the ultrafine particle 1 using an electron beam, the ultrafine particle is enclosed in a core hollow portion of the giant fullerene, by contracting the giant fullerene with the electron beam irradiation. Or a metal ultrafine particle composed of an active metal is enclosed in the core hollow portion of the giant fullerene, by irradiating a high energy beam such as the electron beam to an amorphous carbon under existing of the active metal to form the giant fullerene in an irradiated portion, and by contracting the giant fullerene with the irradiation of the high energy beam such as the electron beam.Type: GrantFiled: October 2, 1997Date of Patent: July 6, 1999Assignees: Research Development Corporation of Japan, Shun-ichiro TanakaInventors: Shun-ichiro Tanaka, Bing She Xu
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Patent number: 5876790Abstract: According to the present invention, a method and apparatus are provided for growing C.sub.60 thin film or films having a high degree of textured crystallinity using vacuum evaporation with a high deposition rate onto the substrate maintained at substantially high temperature. The method includes producing a thin film of C.sub.60 with high degree of textured crystallinity on the substrate using a vacuum evaporation system having the steps of using a metal substrate; operating the substrate at a high temperature of during the growth or deposition period; and ensuring that the deposition rate of C.sub.60 onto the substrate be high.Type: GrantFiled: December 31, 1996Date of Patent: March 2, 1999Assignee: Ormat Industries Ltd.Inventor: Evgueni Kats
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Patent number: 5780101Abstract: A method for the production of carbon encapsulated nanoparticles, carbon nanotubes and other closed carbon structures, including contacting a catalyst of a transition metal, or a compound or alloy thereof, with a gas mixture containing carbon monoxide, and an amount of available molecular hydrogen which is insufficient to cause formation of graphite plane edges through capping, at a temperature in the range from 300.degree.-1000.degree. C., to provide closed carbon structures, which are useful in the preparation of thermal composites, reinforcement composites and magnetic particle recording media.Type: GrantFiled: February 17, 1995Date of Patent: July 14, 1998Assignee: Arizona Board of Regents on behalf of the University of ArizonaInventors: Peter E. Nolan, Andrew H. Cutler, David G. Lynch
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Patent number: 5750615Abstract: This invention relates to curable rubber compositions containing a fullerene form of carbon which is used as a reinforcing agent in the rubber compositions, the fullerene form of carbon being used in place of at least a portion of, or in addition to, the normally used forms of carbon black reinforcement additives. The invention particularly relates to tires having treads composed of such rubber composition(s). The fullerenes may optionally have surface modifications such as partial or complete hydrogen or functional group substitution. The fullerene form of non-conventional carbon reinforcement of rubber composition(s) may exist as discrete particles, aggregates of particles and/or agglomerates. The carbon fullerene has a lower specific gravity than conventional carbon black, thereby allowing a reduced weight tire or other article made from the rubber compound(s) for comparable volumes of carbon black used.Type: GrantFiled: November 26, 1996Date of Patent: May 12, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Lewis Timothy Lukich, Thomas Edwin Duncan, Colleen Marie Lansinger
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Patent number: 5711927Abstract: This invention relates to a method of purifying afullerenes by recrystallization of a fullerene-complexing agent complex and to a fullerene-complexing agent complex.Type: GrantFiled: March 27, 1995Date of Patent: January 27, 1998Inventors: Jerry L. Atwood, Colin L. Raston
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Patent number: 5698140Abstract: A hybrid material comprising an extremely porous, carbon-bearing substrate, such as a carbon-bearing aerogel, and fullerene molecules loaded in the pores of the substrate. The hybrid compound is obtained by several approaches, including chemical vapor infiltration of fullerenes into finished carbon-containing aerogels; infiltration of fullerenes during the solvent displacement step of aerogel preparation; and addition of fullerenes to solgel starting materials.Type: GrantFiled: May 2, 1996Date of Patent: December 16, 1997Assignee: The Arizona Board of Regents, on behalf of the University of ArizonaInventors: Lowell D. Lamb, Donald R. Huffman
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Patent number: 5698497Abstract: Carbonaceous materials based on the fullerene molecules have been developed which allow for superconductivity. The fullerene materials are soluble in common solvents.Type: GrantFiled: June 13, 1994Date of Patent: December 16, 1997Assignee: Lucent Technologies Inc.Inventors: Robert Cort Haddon, Arthur Foster Hebard, Donald Winslow Murphy, Matthew Jonathan Rosseinsky
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Patent number: 5648056Abstract: A fullerene composite comprises a matrix formed of ultrafine fullerene such as, for example, C.sub.60 crystallite having diameters in the range of from 5 to 50 nm and a reinforcing member formed of a mixture consisting of carbon nanotubes, carbon nanocapsules, and inevitable indeterminate carbonaceous impurities and incorporated in the matrix. The amount of the reinforcing member incorporated in the matrix is in the range of from 15 to 45% by weight based on the amount of the matrix. Owing to the use of the reinforcing member which contains carbon nanotubes and carbon nanocapsules, the produced fullerene composite is enabled to acquire improved mechanical strength and resistance to deformation, and the wide applicabilities are endowed with fullerene composites.Type: GrantFiled: April 25, 1995Date of Patent: July 15, 1997Assignees: Research Development Corporation of Japan, Shun-ichiro TanakaInventor: Shun-ichiro Tanaka
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Patent number: 5561102Abstract: A superconductive fullerene and a process for making such superconductive fullerene are provided. The process involves contacting a quantity of fullerene with the vapor of an interhalogen compound such as ICl. The halogen doped fullerenes exhibited a transition temperature above 60 K.Type: GrantFiled: December 14, 1994Date of Patent: October 1, 1996Assignee: The Research Foundation of State University of New York at BuffaloInventors: Yi-Han Kao, Liwei Song, Deborah D. L. Chung, Kevin T. Fredette
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Patent number: 5558903Abstract: The invention relates to an improved synthesis of fullerene (C.sub.60) films, whereby improved purity and adhesion to a substrate are achieved. The invention is not limited to C.sub.60 molecules and other fullerenes and fullerene based materials, including for example, metallofullerenes, fluorinated fullerenes, and codeposition of fullerene and other solid lubricants. The invention also relates to the use of these fullerene materials in oils, greases, polymers and other materials, both organic and inorganic, for improving lubrication and wear life. The invention further relates to a process for the ion bombardment of fullerene materials, including but not limited to, C.sub.60 fullerene materials to improve their tribological properties.Type: GrantFiled: October 20, 1994Date of Patent: September 24, 1996Assignee: The Ohio State UniversityInventors: Bharat Bhushan, James V. Coe, Jr., Balkishan Gupta
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Patent number: 5543378Abstract: This invention relates to a composition, comprising a carbon nanostructure having a palladium crystallite encapsulated therein; and more particularly, to worm-like carbon nanostructures attached to a carbon cluster, the worm-like nanostructures being comprised of a plurality of connecting sections of carbon tubes terminating in an end portion which encapsulates a palladium crystallite within its internal cavity.Type: GrantFiled: February 24, 1995Date of Patent: August 6, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Ying Wang
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Patent number: 5493094Abstract: Fullerene-containing soot, is prepared by evaporating an electrically conductive carbon rod in an electric arc plasma sustained in a tubular evaporator between coaxially aligned carbon rods in a stream of inert gas flowing coaxially over the carbon rods at a flow rate of at least 0.02 m.sup.3 /h, and collecting the soot from the evaporator walls.Type: GrantFiled: November 23, 1994Date of Patent: February 20, 1996Inventor: Walter N. Simmons
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Patent number: 5457343Abstract: The invention provides a nanometer sized carbon tubule enclosing a foreign material except for carbon. The carbon tubule comprises a plurality of tubular graphite monoatomic sheets coaxially arranged. The foreign material is introduced through a top portion of the carbon tubule. The introduction of the foreign material is accomplished after forming an opening at the top portion of the carbon tubule either by contacting the foreign material with the top portion of the carbon tubule together with a heat treatment or by an evaporation of the foreign material on the top portion of the carbon tubule together with the heat treatment. The foreign material is introduced only in a center hollow space defined by an internal surface of the most inner tubular graphite monoatomic sheet.Type: GrantFiled: December 21, 1993Date of Patent: October 10, 1995Assignee: NEC CorporationInventors: Pulickel M. Ajayan, Sumio Iijima
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Patent number: 5393955Abstract: An improved process, and an apparatus, are provided for preparing graphitic soot comprising C.sub.60 and C.sub.70 fullerenes, the process comprising evaporating, in a tubular evaporator, an electrically conductive carbon rod in an electric arc plasma sustained between the carbon rod and a second electrically conductive carbon rod, each of the carbon rods being aligned coaxially in the evaporator, and at least one of the rods being moveable, in a stream of at least one inert gas flowing coaxially over the carbon rods at an inlet flow rate of at least about 0.02 m.sup.3 /h, and collecting the graphitic soot from internal surfaces of the evaporator.Type: GrantFiled: January 14, 1993Date of Patent: February 28, 1995Inventor: Walter N. Simmons
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Patent number: 5391323Abstract: Carbonaceous materials based on the fullerene molecules have been developed which allow for high conductivity (comparable to or higher than those attained by n-type doped polyacetylene). The fullerene materials are soluble in common solvents.Type: GrantFiled: November 22, 1993Date of Patent: February 21, 1995Assignee: AT&T Corp.Inventors: Robert C. Haddon, Arthur F. Hebard, Donald W. Murphy, Matthew J. Rosseinsky
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Patent number: 5380595Abstract: A carbon cluster film has a precisely controlled stable electrical conductivity which does not deteriorate in a short period of time in air. Such a carbon cluster film having a stable electrical conductivity is formed by introducing an impurity into a thin film of fullerenes by ion implantation. The fullerenes include C.sub.60, C.sub.70 or the like.Type: GrantFiled: October 20, 1992Date of Patent: January 10, 1995Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yoshinobu Ueba, Nobuyuki Okuda, Kengo Ohkura, Hirokazu Kugai
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Patent number: 5380703Abstract: A superconductive fullerene and a process for making such superconductive fullerene are provided. The process involves contacting-a quantity of fullerene with the vapor of an interhalogen compound such as ICl. The halogen doped fullerenes exhibited a transition temperature above 60 K.Type: GrantFiled: January 25, 1993Date of Patent: January 10, 1995Assignee: The Research Foundation of State University of New York at BuffaloInventors: Yi-Han Kao, Liwei Song, Deborah D. L. Chung, Kevin T. Fredette
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Patent number: 5346683Abstract: Uncapped and thinned carbon nanotubes are produced by reaction with a flowing reactant gas capable of reaction selectively with carbon atoms in the capped region of nanotubes. The uncapped and thinned nanotubes provide open compartments for insertion of chemicals and exhibit enhanced surface area with modified physical and chemical properties.Type: GrantFiled: March 26, 1993Date of Patent: September 13, 1994Assignee: Gas Research InstituteInventors: Malcolm L. H. Green, Shik C. Tsang