| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 204173000 | Carbon | 12 |
| 20080217161 | PROCESS FOR THE SIMULTANEOUS AND SELECTIVE PREPARATION OF SINGLE-WALLED AND MULTI-WALLED CARBON NANOTUBES - The present invention provides a process for the simultaneous and selective growth of single walled and multiwalled carbon nanotubes using electric arc discharge technique. According to present development it is possible to synthesise and collect catalyst free carbon nanotubes from cathode deposit. A mechanism of cooling coil arrangement was designed and used inside the arc discharge chamber so as to be capable to grow sufficient amount of single walled carbon nanotubes in the form of webs surrounding the coil. The present invention offers a scalable way for producing both SWNTs and MWNTs in the single run. | 09-11-2008 |
| 20080296147 | Method for Manufacturing of Carbon Nanotubes in Dielectric Liquids - A process for manufacturing carbon nanotubes, including a step of creating an electric arc in an electric field between a carbonaceous anode and a carbonaceous cathode under conditions effective to produce the carbon nanotubes, wherein the carbonaceous anode and the carbonaceous cathode are immersed in dielectric liquid serving as a dielectric, coolant and for providing an oxygen-free environment. Preferably, one of the electric discharge machining dielectric oils is used as dielectric liquid. Preferably, an electric discharge machine is used to immerse the electrodes in the dielectric liquid, create an electric field, induce the arc, and adjust the gap between the electrodes thus optimizing the yield of carbon nanotubes. The process is cost-effective, easy to implement, and provides high-quality carbon nanotubes while eliminating the need for dedicated equipment and catalysts. | 12-04-2008 |
| 20090038934 | APPARATUS AND METHOD FOR DIAMOND PRODUCTION - An apparatus for producing diamond in a deposition chamber including a heat-sinking holder for holding a diamond and for making thermal contact with a side surface of the diamond adjacent to an edge of a growth surface of the diamond, a noncontact temperature measurement device positioned to measure temperature of the diamond across the growth surface of the diamond and a main process controller for receiving a temperature measurement from the noncontact temperature measurement device and controlling temperature of the growth surface such that all temperature gradients across the growth surface are less than 20° C. The method for producing diamond includes positioning diamond in a holder such that a thermal contact is made with a side surface of the diamond adjacent to an edge of a growth surface of the diamond, measuring temperature of the growth surface of the diamond to generate temperature measurements, controlling temperature of the growth surface based upon the temperature measurements, and growing single-crystal diamond by microwave plasma chemical vapor deposition on the growth surface, wherein a growth rate of the diamond is greater than 1 micrometer per hour. | 02-12-2009 |
| 20090078561 | Apparatus and Methods for Growing Nanofibres and Nanotips - This invention relates to heating apparatus and methods with particular applications for growing a nanofibre, and to nanotips fabricated by such methods and apparatus. Embodiments of the invention can be implemented to provide nanotips for electron gun sources and scanning probe microscopy. A nanotip fabrication apparatus includes a heater for heating an object in the presence of an electric field. The heater comprises: a substantially planar electrically conductive heating element configured to define at least one aperture; a support to mount the heated object such that it protrudes through said aperture; and at least one electrical connection to said heating element. In use, the heating element can be biased by said at least one electrical connection such that the electric field in the vicinity of the object is substantially perpendicular to the plane of the element. | 03-26-2009 |
| 20100270142 | COMBUSTION FLAME PLASMA HYBRID REACTOR SYSTEMS, CHEMICAL REACTANT SOURCES AND RELATED METHODS - Combustion flame-plasma hybrid reactor systems, chemical reactant sources, and related methods are disclosed. In one embodiment, a combustion flame-plasma hybrid reactor system comprising a reaction chamber, a combustion torch positioned to direct a flame into the reaction chamber, and one or more reactant feed assemblies configured to electrically energize at least one electrically conductive solid reactant structure to form a plasma and feed each electrically conductive solid reactant structure into the plasma to form at least one product is disclosed. In an additional embodiment, a chemical reactant source for a combustion flame-plasma hybrid reactor comprising an elongated electrically conductive reactant structure consisting essentially of at least one chemical reactant is disclosed. In further embodiments, methods of forming a chemical reactant source and methods of chemically converting at least one reactant into at least one product are disclosed. | 10-28-2010 |
| 20110162958 | PLASMA DECOMPOSITION APPARATUS AND METHOD FOR CARBON DIOXIDE - A plasma decomposition apparatus and method for carbon dioxide decomposes carbon dioxide in a non-thermal plasma state into carbon and oxygen. The apparatus includes: a reactor for decomposing carbon dioxide with an inlet for inflow of carbon dioxide and a outlet for discharge of carbon and oxygen; a plurality of anodes placed in the reactor, having a rod shape elongated in a length direction; a plurality of cathodes placed among the plurality of anodes in the reactor, having a rod shape elongated in the length direction; and a power source applying a predetermined voltage between the plurality of anodes and the plurality of cathodes. | 07-07-2011 |
| 20120012453 | METHODS OF ELECTROSPRAY CHEMICAL SYNTHESIS AND DEVICE FOR USE THEREIN - The present invention relates to methods of production of chemical bonds and subsequent molecules by electrospray ionization and the design of an electrospray chemical synthesizer, for use in chemical synthesis and expedited organic chemical reactions. | 01-19-2012 |
| 20120085636 | INCREASED EFFICIENCY IN THE SYNTHESIS OF CARBON NANOMATERIAL - Disclosed is a system or method of increased efficiency in carbon nanomaterial synthesis. In one embodiment, a system or method of automated collection of deposited carbon nanomaterial is disclosed. According to one or more embodiments, a method of automated collection of deposited nanomaterial may comprise using cleaner blades to clean the wall of a deposition chamber and the surface of a central body where carbon nanomaterial has been deposited. The method of automated carbon nanomaterial collection may be used in connection with a method of carbon nanomaterial synthesis, to create a more efficient synthesis process. | 04-12-2012 |
| 20120325648 | REACTOR AND METHOD FOR OBTAINING CARBON MATERIAL BY SHORT CIRCUIT ELECTRIC CURRENT - The present invention refers to a new and low cost method for producing single wall nanotubes and other allotropic forms of carbon. Said method uses a high electric current and 127 VAC or 220 VAC power supplies to sublimation of a solid precursor, which material can be made of graphite. The solid precursor is connected to metallic electrodes, so that an intense electric current cross the contacts to pulverize the graphite under high temperature. The carbon materials are deposited in the wall of the reactor as well as in the electrodes, in an atmospheric pressure. The obtained material is purified in acids and, then, the carbon nanotubes are separated. In general, this new synthesis is characterized by the absence of a metal catalyst, the employ of a short circuit current with an agent to produce carbon materials, the low pressure into reaction, and the assembly of the apparatus involving a very low cost and a low voltage of operation. | 12-27-2012 |
| 20160038907 | SYSTEM AND METHOD FOR MASS PRODUCTION OF GRAPHENE PLATELETS IN ARC PLASMA - A system and method for producing graphene includes a discharge assembly and a substrate assembly. The discharge assembly includes a cathode and an anode, which in one embodiment are offset from each other. The anode produces a flux stream that is deposited onto a substrate. A collection device removes the deposited material from the rotating substrate. The flux stream can be a carbon vapor, with the deposited flux being graphene. | 02-11-2016 |
| 20160159650 | METHOD FOR PRODUCING A COLLOIDAL SOLUTION OF NANOSCALE CARBON - The technical result of the present method is simplicity, low cost and the possibility of producing nanoparticles of different types. This result is achieved in that the method for producing a colloidal solution of nanoscale carbon is carried out as follows: an organic fluid is fed into a chamber that contains electrodes, an inert gas is injected into the inter-electrode space, a high temperature plasma channel is formed in gas bubbles, thus atomizing ethanol molecules, followed by rapid cooling. | 06-09-2016 |
| 20160200583 | CHEMICAL ACTIVATION OF CARBON USING RF AND DC PLASMA | 07-14-2016 |
