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Class 204/173 - Carbon


Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Processes directed to the production of carbon.
No. of patents: 121
Last issue date: 01/31/2012


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NumberTitleIssue Date
6989083Method for preparing carbon nano-fine particle, apparatus for preparing the same and mono-layer carbon nanotube
A graphite cathode and a graphite anode are placed opposite each other through an insulating plate having a notch. A voltage is applied between both of the electrodes to generate arc discharge at the notch of the insulating plate. A given area of the graphite anode ...
01/24/2006
6979590Methods of making electromechanical three-trace junction devices
Methods of producing an electromechanical circuit element are described. A lower structure having lower support structures and a lower electrically conductive element is provided. A nanotube ribbon (or other electromechanically responsive element) is formed on an up...
12/27/2005
6972118Apparatus and method for processing hydrogen, oxygen and other gases
Apparatus and method for the industrial production of a new form of hydrogen, oxygen and other gases. The invention includes a pressure resistant piping system filled with a gas compressed to a desired pressure. A magnetic field within the piping system is generated...
12/06/2005
6969504Electrical conductors comprising single-wall carbon nanotubes
The present invention concerns electrical conductors comprising armchair single-wall carbon nanotubes. Such electrical conductors made by the invention are metallic, i.e., they will conduct electrical charges with a relatively low resistance. The amount of armchair ...
11/29/2005
6965513Carbon nanotube thermal interface structures
The invention relates to a process of forming a thermal interface that employs carbon nanotubes to reduce thermal resistance between an electronic device and a cooling solution. Bundles of aligned nanotubes receive injected polymeric material to produce a polymeric/...
11/15/2005
6964731Soil-resistant coating for glass surfaces
A glass article which has a water-sheeting coating and a method of applying coatings to opposed sides of a substrate are described. In one embodiment, a glass sheet is provided bearing a sputtered water-sheeting coating comprising silica on an exterior surface and b...
11/15/2005
6955800Method and apparatus for producing carbon nanotubes
A method and apparatus for catalytic production of carbon nanotubes. Catalytic particles are exposed to different process conditions at successive stages wherein the catalytic particles do not come in contact with reactive (catalytic) gases until preferred process c...
10/18/2005
6955745Method of spark-processing silicon and resulting materials
The subject invention pertains to a method of spark processing silicon and resulting materials. The subject invention also relates to electroluminescent devices incorporating the materials produced by the subject method. The subject method for spark-processing can e...
10/18/2005
6949877Electron emitter including carbon nanotubes and its application in gas discharge devices
An electron emitter includes a coating layer of a mixture of carbon nanotubes and alkaline-earth metal oxides on an electrically conducting structure. The preferred carbon nanotubes are those having a diameter less than about 200 nm. A substantial portion of electro...
09/27/2005
6947285Thermal interface material
A thermal interface material (40) includes a polymer matrix and a number of carbon nanocapsules incorporated in the polymer matrix. The thermal interface material is sandwiched between a heat source (30) having a high density and a heat sink (50...
09/20/2005
6939446Soil-resistant coating for glass surfaces
A glass article which has a water-sheeting coating and a method of applying coatings to opposed sides of a substrate are described. In one embodiment, a water-sheeting coating 20 comprising silica is sputtered directly onto an exterior surface of the glass. T...
09/06/2005
6936228Manufacturing apparatus for carbon nanotube
Provided is a manufacturing apparatus for a carbon nanotube including: at least two electrodes whose tips are opposed to each other; at least a power supply that applies a voltage between the two electrodes to generate discharge plasma in a discharge area between th...
08/30/2005
6927521Commutator and electric rotary device having the same
The commutator is capable of reducing contact resistance between the brush and a commutator, improving efficiency of an electric rotary device and restricting exhaustion of the commutator. The commutator comprises: a plurality of commutating pieces having outer face...
08/09/2005
6919592Electromechanical memory array using nanotube ribbons and method for making same
Electromechanical circuits, such as memory cells, and methods for making same are disclosed. The circuits include a structure having electrically conductive traces and supports extending from a surface of the substrate, and nanotube ribbons suspended by the supports...
07/19/2005
6919064Process and apparatus for producing single-walled carbon nanotubes
A process and apparatus for catalytic production of single walled carbon nanotubes. Catalytic particles are exposed to different process conditions at successive stages wherein the catalytic particles do not come in contact with reactive (catalytic) gases until pref...
07/19/2005
6913075Dendritic fiber material
A thermal interface includes nanofibrils. The nanofibrils may be attached to a flat base or membrane, or may be attached to the tip portions of larger diameter fibers. The nanofibrils have a diameter of less than about 1 micron, and may advantageously be formed from...
07/05/2005
6911682Electromechanical three-trace junction devices
Three trace electromechanical circuits and methods of using same are described. A circuit includes first and second electrically conductive elements with a nanotube ribbon (or other electromechanical elements) disposed therebetween. The nanotube ribbon is movable to...
06/28/2005
6884405Method and device for producing higher fullerenes and nanotubes
A fullerene/nanotubes mixture is produced during a periodical pulsed auto-regulated action of the electric current arc-discharge in the multi-component hydrocarbon medium with limited fullerenes' solubility, besides, the action is continued until the medium dissolve...
04/26/2005
6884404Method of manufacturing carbon nanotubes and/or fullerenes, and manufacturing apparatus for the same
The method of manufacturing carbon nanotubes and/or fullerenes reduces the pressure inside a system to 1.3 Pa or lower, supplies a carboniferous liquid state material to raise the pressure inside the system to at least 1.3 kPa to 93.3 kPa, generates arc discharges, ...
04/26/2005
6855301Synthesis method for producing carbon clusters and structured carbon clusters produced thereby
The present invention includes carbon synthesis devices and systems. The invention also includes machines and instruments using those aspects of the invention. The present invention also includes methods of carbon synthesis. The present invention includes an array o...
02/15/2005
6852200Non-thermal plasma reactor gas treatment system
A gas treatment system and method for using the same is disclosed. The gas treatment system, comprises: a non-thermal plasma reactor; and a catalyst composition disposed within said non-thermal plasma reactor, said catalyst composition comprising a MZr4(P...
02/08/2005
6827823Nano-carbon and composite material or mixed material containing nano-carbon and metal fine particle and methods for producing and patterning the same
Described herein is a method of preparing nano-carbon; a method of preparing an electron emitting source by supporting the soot; and an apparatus for preparing the same. A torch electrode 10 of an arc torch 1 as a first electrode is placed opposite to ...
12/07/2004
6794598Arc electrodes for synthesis of carbon nanostructures
An arc electrode structure, for producing carbon nanostructures, which includes a first electrode and two or more second electrodes disposed within a chamber is provided. The electrodes are connected to a voltage potential to produce an arc-plasma region. The first ...
09/21/2004
6787002Compact plasma reactor
A device for purifying an exhaust gas contains at least one first and one second component with a respective shell and core through which the exhaust flows, as well as with two front faces each. At least one of the front faces of the first component and at least one...
09/07/2004
6765949Carbon nanostructures and methods of preparation
An electric arc furnace and method for forming tubular carbon nanostructures comprising a first electrode (cathode) and an a second electrode (anode) opposite the first electrode, sources of voltage (V) and current (A) to create charged particles (Ie) and produce an...
07/20/2004
6740224Method of manufacturing carbon nanotubes
A process for manufacturing carbon nanotubes, including a step of inducing electrical current through a carbon anode and a carbon cathode under conditions effective to produce the carbon nanotubes, wherein the carbon cathode is larger than the carbon anode. Preferab...
05/25/2004
6645438Methods and apparatus for producing fullerenes in large quantities from liquid hydrocarbons
A method and apparatus for producing fullerenes, in large quantities at an economical cost, from liquid and gaseous hydrocarbons treated by a high energy source in a reactor devoid of oxygen are presented. The liquid hydrocarbons preferably selected from ...
11/11/2003
6613198Pulsed arc molecular beam process
A process for preparing a material in which a gas mixture is subjected to a a temperature of at least 1,000 degrees Celsius while its pressure increased to at least 1,000 Torr. The pressurized hot gas mixture, which contains inert gas and fullerene ions, ...
09/02/2003
6455021Method for producing carbon nanotubes
The method of the present invention deposits carbon nanotubes by contacting carbon vapor with a non-magnetic transition metal including at least two elements selected from the group consisting of ruthenium, rhodium, palladium, and platinum. For example, c...
09/24/2002
6451175Method and apparatus for carbon nanotube production
Carbon nanotubes are produced by depositing carbon material from an electrical arc established between a cathode and a carbon anode. A vibrational driver is coupled to the cathode to vibrate the cathode in a manner which enhances the proportion of carbon ...
09/17/2002
6358375Method and device for producing fullerenes
The invention relates to a method and a device for the continuous production of carbon black with a high fullerene content. The device essentially consists of a plasma reactor (1), a downstream heat separator (2) to separate the non-volatile constituents ...
03/19/2002
6321531Method and apparatus for using free radicals to reduce pollutants in the exhaust gases from the combustion of a fuel
The invention is directed to an apparatus and a method for the reduction of pollutants in a gas stream containing gas formed from the oxidation of fuel, such as, in the exhaust stream of a combustion engine. Radicals are produced using a corona discharge ...
11/27/2001
6261421Particle-free cathodic arc carbon ion source
A method and apparatus for vacuum arc deposition of carbon on a substrate inhibits or eliminates emission of contaminating carbon particles in the ion plasma by maintaining an elevated local plasma pressure at the cathode or target surface, thereby minimi...
07/17/2001
6171451Method and apparatus for producing complex carbon molecules
A device (100) for producing fullerenes includes an IEC vacuum chamber (110) which has a central grid-like electrode (112) and a conductive outer shell (111) that are connected to a pulsed source of high voltage (114) and provide an electric field within ...
01/09/2001
6149775Method for preparing single layer carbon nano-tube
There is provided a method for preparing a single layer carbon nano-tube stably and in high preparation efficiency. Helium is introduced from a gas inlet 19 while exhausting inside a vacuum chamber 11 by means of a rotary pump 12 to prepare an atmosphere ...
11/21/2000
6099696Conversion of carbon or carbon-containing compounds in a plasma
A process for converting carbon or carbonated compounds in a plasma into carbons having a defined nanostructure consists of a reaction chamber whose head part contains three electrodes, a plasma gas supply, and a carbon or carbonated compound supply. A pr...
08/08/2000
6063243Method for making nanotubes and nanoparticles
The present invention is an apparatus and method for producing nano-scale tubes and particles. The apparatus comprises novel electrodes for use in arc discharge techniques. The electrodes have interior conduits for delivery and withdrawal of material from...
05/16/2000
6063187Deposition method for heteroepitaxial diamond
A method for the growth of diamond on a substrate combines an ECR (Electron cyclotron resonance) MPCVD (Microwave plasma chemical vapor deposition) method with a MPCVD method in one system. A two-step diamond growing method comprises firstly etching and n...
05/16/2000
6029442Method and apparatus for using free radicals to reduce pollutants in the exhaust gases from the combustion of fuel
The invention is directed to an apparatus and a method for the reduction of pollutants in the exhaust stream of a combustion engine. Radicals are produced using a corona discharge in the combustion gas stream of the engine, either in the precombustion gas...
02/29/2000
5993761Conversion of hydrocarbons assisted by gliding electric arcs in the presence of water vapor and/or carbon dioxide
Method for conversion of hydrocarbons assisted by gliding electric arcs in the presence of water vapor and/or carbon dioxide. The objective of the process and the plasma assistance device to steam reforming, to the reforming with CO2 or to simultaneous reformi...
11/30/1999
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