| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423446000 | Diamond | 63 |
| 20080199388 | Method for manufacturing a diamond composite - A method for manufacturing a diamond composite, includes: a) mixing diamonds with additives, the mixture comprising at least 50 wt % and less than 95 wt % of diamonds and more than 5 wt % additives; b) forming a work piece from the mixture using a pressure of at least 100 Mpa; c) heating the formed work piece to at least 300° C. for removing possible water and wholly or partially removing additives; d) heating the work piece and controlling the heating temperature and heating time so that a certain desired amount of graphite is created by graphitization of diamonds, wherein the amount of graphite created by graphitization is 3-50 wt % of the amount of diamond; e) infiltrating silicon or silicon alloy into the work piece. | 08-21-2008 |
| 20080219914 | Method of Cladding Diamond Seeds - The invention relates to a method for manufacture of diamond, the method including the steps of providing a first coating of solvent metal or solvent metal alloy on a diamond seed to create a coated diamond seed, situating the coated diamond seed adjacent a catalyst system comprising a solvent metal and/or a source of carbon, and subjecting the coated diamond seed and catalyst system to increased temperature wherein the melting point of the first coating is at least 20 deg C. below that of the catalyst system. The invention further relates to a compact comprising a plurality of diamond seeds wherein at least one seed includes a first coating comprising a solvent metal and/or solvent metal based alloy, the compact further comprising a catalyst system comprising a solvent metal and/or a source of carbon wherein the melting point of the first coating is at least 20 deg C. below that of the catalyst system. | 09-11-2008 |
| 20080241049 | Ultrahard diamonds and method of making thereof - 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. | 10-02-2008 |
| 20080311023 | Single Crystal Diamond - A single crystal diamond grown by vapor phase synthesis, wherein when one main surface is irradiated with a linearly polarized light considered to be the synthesis of two mutually perpendicular linearly polarized light beams, the phase difference between the two mutually perpendicular linearly polarized light beams exiting another main surface on the opposite side is, at a maximum, not more than 50 nm per 100 μm of crystal thickness over the entire crystal. This single crystal diamond is of a large size and high quality unattainable up to now, and has characteristics that are extremely desirable in semiconductor device substrates and are applied to optical components of which low strain is required. | 12-18-2008 |
| 20080311024 | DIAMOND SINGLE CRYSTAL SUBSTRATE MANUFACTURING METHOD AND DIAMOND SINGLE CRYSTAL SUBSTRATE - A diamond single crystal substrate manufacturing method for growing by vapor-phase synthesis a single crystal from a diamond single crystal seed substrate, comprising etching away by reactive ion etching, prior to single crystal growth, at least 0.5 μm and less than 400 μm, in etching thickness off the surface of the seed substrate which has been mechanically polished, thereby removing from the surface of the seed substrate the work-affected layers caused by mechanical polishing; and growing then a single crystal thereon. The manufacturing method provides a diamond single crystal substrate having a high quality, large size, and no unintentional impurity inclusions, and suitable for use as semiconductor materials, electronic components, optical components or the like. | 12-18-2008 |
| 20080317659 | Diamond-Carbon Material and a Method for the Production Thereof - The invention relates to carbon chemistry and is embodied in the form of a diamond-carbon material, in which carbon is contained in the form a diamond cubic modification and in a roentgen-amorphous phase at a ratio of (40-80):(60-20) in terms of a carbon mass, respectively, wherein the inventive material comprises 89.1-95.2 mass % carbon, 1.2-5.0 mass % nitrogen, 0.1-4.7 mass % oxygen and 0.1-1.5 mass % fire-resisting impurities. The inventive method for producing said material consisting in detonating, in a closed space of a carbon-inert gas medium, a carbon-containing oxygen-deficient explosive material, which is placed in a condensed phase envelop containing a reducing agent at a quantitative ratio between said reducing agent mass in the condensed phase and the mass of the used carbon-containing explosive material equal to or greater than 0.01:1. A method for processing the samples of diamond-carbon material produced by means of a detonation synthesis for examining the elemental composition thereof is also disclosed. | 12-25-2008 |
| 20090004092 | Nanodiamond and a Method for the Production Thereof - The invention relates to carbon chemistry and is embodied in the form of a nanodiamond comprising 90.0-98.0 mass % carbon, 0.1-5.0 mass % hydrogen, 1.5-3.0 mass % nitrogen and 0.1-4.5 mass % oxygen, wherein the carbon is contained in the form a diamond cubic modification and in a roentgen-amorphous phase at a ratio of (82-95):(18-5) in terms of a carbon mass, respectively. The inventive method for producing said material consisting in detonating in a closed space of a carbon-inert gas medium a carbon-containing oxygen-deficient explosive material which is placed in a condensed phase envelop containing a reducing agent at a quantitative ratio between said reducing agent mass in the condensed envelop and the mass of the used carbon-containing explosive material equal to or greater than 0.01:1 and in chemically purifying by treating detonation products with a 2-40% aqua nitric acid jointly with a compressed air oxygen at a temperature ranging from 200 to 280° C. and a pressure of 5-15 MPa. | 01-01-2009 |
| 20090004093 | Materials and methods for the manufacture of large crystal diamonds - Materials and Methods are provided for forming single crystal diamond growth using microwave plasma chemical vapor deposition (CVD) process in partial vacuum with a gaseous mixture containing a methane/hydrogen mixture with optional nitrogen, oxygen and xenon addition. The single crystal substrate can be ceramic material such as MgO, Al | 01-01-2009 |
| 20090016950 | Terrestrial lightning-powered magnetic organized single crystal diamond blocks: The forces of nature to form the beautiful gem - The new century thrives for the synthesis of larger single crystal diamond blocks for various engineering applications and esthetic marvel. This invention makes use of triggered lightning bolts for instantaneously driving large cross-sections of high electric current density through compresses heated carbonaceous precursor (possibly seeded seed diamond and/or group VIII transition metal catalysts). The said conditions provide huge spin polarized electron motion over large volume for organized magnetization and spin interactions of the lightning bolt with many carbon atoms for the spin induced orbital rehybridization of sp and sp | 01-15-2009 |
| 20090110626 | Low Pressure Method of Annealing Diamonds - The present invention relates to method of improving the optical properties of diamond at low pressures and more specifically to a method of producing a CVD diamond of a desired optical quality which includes growing CVD diamond and raising the temperature of the CVD diamond from about 1400° C. to about 2200° C. at a pressure of from about 1 to about 760 torr outside the diamond stability field in a reducing atmosphere for a time period of from about 5 seconds to about 3 hours. | 04-30-2009 |
| 20090142249 | DIAMOND SINGLE CRYSTAL SUBSTRATE - A method for manufacturing a diamond single crystal substrate, in which a single crystal is grown from a diamond single crystal serving as a seed substrate by vapor phase synthesis, said method comprising: preparing a diamond single crystal seed substrate which has a main surface whose planar orientation falls within an inclination range of not more than 8 degrees relative to a {100} plane or a {111} plane, as a seed substrate; forming a plurality of planes of different orientation which are inclined in the outer peripheral direction of the main surface relative to the main surface on one side of this seed substrate, by machining; and then growing a diamond single crystal by vapor phase synthesis. | 06-04-2009 |
| 20090175776 | FINE POWDER OF SINGLE CRYSTALLINE DIAMOND PARTICLES AND A METHOD FOR THE PRODUCTION THEREOF - An object of this invention is to provide a fine powder of diamond particles of less than 50 nm with a narrow particle size range. The diamond is single crystalline and characterized with a lot of sharp edges and sharp points. Another object is to provide a method for efficiently producing such fine powder. | 07-09-2009 |
| 20090175777 | SINGLE CRYSTAL DIAMOND PREPARED BY CVD - A single crystal diamond prepared by CVD and having one or more electronic characteristics; making the diamond suitable for electronic applications. Also provided is a method of making the single crystal CVD diamond. | 07-09-2009 |
| 20090202421 | SYNTHETIC DIAMONDS PREPARED FROM ROSES - The present invention relates to a method of making a more permanent remembrance from a gift that includes organic material, wherein the gift has ephemeral beauty and symbolizes the feelings of a gift-giver toward a recipient. This method includes transforming the ephemeral beauty of the gift to a more permanent or eternal manifestation that symbolizes the feelings of the gift-giver toward the recipient. This result is conveniently achieved by initially converting the gift into carbon or a carbon-containing compound that is suitable for preparing a synthetic diamond, and then converting the carbon or carbon-containing compound under suitable pressure and temperature conditions to form a gem quality synthetic diamond. | 08-13-2009 |
| 20090257942 | DEVICE AND METHOD FOR GROWING DIAMOND IN A LIQUID PHASE - A method of growing a diamond mass in a liquid growth medium. The liquid growth medium can include a carbon source, a diamond growth catalyst such as a diamond catalyst metal-rare earth element alloy or nanocatalyst, and a dissociated hydrogen of a hydrogen source. The carbon source provides carbon atoms for growing diamond and can include a diamond seed material for diamond growth. The molten liquid phase provides a diamond growth catalyst which allows the carbon to form diamond at the temperature and low pressure conditions discussed. Furthermore, the dissociated hydrogen acts as a concentrator for assembling carbon atoms at a relatively high concentration which mimicks, in some respects, diamond growth under more conventional high pressure processes without the high pressure. | 10-15-2009 |
| 20090263308 | Dense Diamond Body - In one aspect of the invention, a method of making a dense diamond body comprises the steps of: forming a sintered polycrystalline diamond body with the use of a catalyst; forming voids in the body by removing at least some of the catalyst; and reducing the overall volume of voids by applying pressure and temperature to the body in a vessel substantially free of additional catalysts. | 10-22-2009 |
| 20090285744 | Process For Producing Fine Diamond and Fine Diamond - The present invention relates to a process for producing a fine diamond characterized by that an explosive composition containing a compound having an aliphatic hydrocarbon ring with 4 to 15 carbons, a fullerenes or a tubular or fiber carbon nanostructure having a diameter of 1 to 100 nm as a carbon raw material is exploded for explosive synthesis, and a fine diamond obtained by said process; the ultrafine particulate diamond of 1 to 3 nm is expected, as a single nano diamond, for application of the fields such as ultrafine processing, the uniform, spherical fine particulate diamond of 0.01 to 100 μm is expected as abrasive grains for polishing in precise processing and the like, and the needle diamond is expected for application in various sensors and the like. | 11-19-2009 |
| 20090297429 | HIGH GROWTH RATE METHODS OF PRODUCING HIGH-QUALITY DIAMONDS - In one aspect, the invention relates to a method of producing high-quality diamond comprising the steps of providing a mixture comprising hydrogen, a carbon precursor, and oxygen; exposing the mixture to energy at a power sufficient to establish a plasma from the mixture; containing the plasma at a pressure sufficient to maintain the plasma; and depositing carbon-containing species from the plasma to produce diamond at a growth rate of at least about 10 μm/hr; wherein the diamond comprises less than about 10 ppm nitrogen. The invention also relates to the apparatus, gas compositions, and plasma compositions used in connection with the methods of the invention as well as the products produced by the methods of the invention. This abstract is intended as a safety scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention. | 12-03-2009 |
| 20100028246 | SYNTHESIS OF DIAMOND - In a method of synthesising diamond, a reaction mixture of a carbon source and a solvent/catalyst is pretreated at a high temperature and a high vacuum to remove substantially all of the atmospheric gases and other light volatile atoms. Then, at a reduced temperature, the removed gas is replaced with a desirable process gas. The pre-treated reaction mixture is then subjected to elevated temperature and pressure conditions in the diamond stable region of the carbon phase diagram in the presence of the process gas to produce the diamond. The process gas is selected to enhance the diamond growth rate, reduce solvent/catalyst inclusions, shift the morphology of the synthesised diamond (grown crystals) towards major crystal faces and blocker shape, reduce cracking and strain in the grown crystals, preferably at a desirably high growth rate, and permit the controlled and uniform doping of the diamond crystal with a hetero-atom such as P (phosphorus) or S (sulphur). | 02-04-2010 |
| 20100055022 | DIAMOND IDENTIFIER - Diamonds are embedded with one or more layers representative of an identifier. The identifier may include encoding in the form of defects created in one or more layers in a recognizable pattern, such as a bar code, characters or symbols. In some embodiments, a single crystal CVD diamond is formed with layers of varying thickness to provide the encoding. A system includes a radiation source to provide short wavelength light. A holder positions a gemstone to receive the light. A detector is positioned to receive fluorescent light from the gemstone when the gemstone is a CVD grown gemstone, and a pattern identifier correlates a detected pattern of defects to unique identification information. | 03-04-2010 |
| 20100068122 | Gem Growth Cubic Press and Associated Methods - A multiple anvil press can be configured for gem-quality growth. The press can include a plurality of opposing anvils, where the anvils are configured for simultaneous movement within a tolerance of less than about 0.5 mm as measured at each anvil surface, and each anvil can be aligned to a common center of all the anvils where the alignment is tuned to a tolerance of less than about 0.1 mm during use. The press can also include a reaction volume formed by the enclosure of all anvils, where the reaction volume has a size configured to facilitate single crystal growth per cycle time. | 03-18-2010 |
| 20100111812 | SINGLE CRYSTALLINE DIAMOND AND PRODUCING METHOD THEREOF - The object of the present invention is to obtain a high quality single crystalline diamond that has less distortion and large area suitable for semiconductor device substrates or an optical component material. The present invention is a single crystalline diamond produced by chemical vapor deposition, wherein, when a linear polarized light which is composed of two linear polarized lights perpendicular to each other is introduced into one main face of the single crystalline diamond, a maximum value of a retardation between the two linear polarized lights perpendicular to each other which come out from an opposite main face is not more than 50 μm at maximum per a thickness of 100 μm across an entire of the single crystalline diamond, and also a method for producing the diamond. | 05-06-2010 |
| 20100166635 | Interrupted Diamond Growth - A method for growing diamonds under high pressure high temperature (HPHT) is provided. In one aspect, such a method can include providing a growth precursor including a carbon source and a catalyst material, the growth precursor having a diamond precursor particle arranged at least partially therein, melting the diamond precursor particle, and growing a diamond particle by subjecting the melted diamond precursor particle and the growth precursor to temperature and pressure conditions sufficient for diamond growth. In some aspects, the resulting diamond particle can be utilized as a diamond precursor particle in a subsequent reaction to grow an even larger diamond particle. | 07-01-2010 |
| 20100166636 | LARGE DIAMOND CRYSTAL SUBSTRATES AND METHODS FOR PRODUCING THE SAME - The present invention provides a method for producing a large substrate of single-crystal diamond, including the steps of preparing a plurality of single-crystal diamond layers separated form an identical parent substrate, placing the single-crystal diamond layers in a mosaic pattern on a flat support, and growing a single-crystal diamond by a vapor-phase synthesis method on faces of the single-crystal diamond layers where they have been separated from the parent substrate. | 07-01-2010 |
| 20100178233 | SYNTHETIC DIAMONDS PREPARED FROM ORGANIC MATERIALS - The present invention relates to a method of making a more permanent remembrance from a graphitizable or carbon-containing material, wherein the material is part of or embodied in an ephemeral object that signifies a power, attribute, memory, custom, tradition, emotion or symbolism associated with a life experience or event. The method includes transforming the ephemeral object to the more permanent remembrance by converting the carbon-containing material to a synthetic diamond, thus transferring the power, attribute, memory, custom, tradition, emotion or symbolism of the object or the associated life experience or event into the diamond. The synthetic diamond can be prepared by transforming the carbon-containing material to a carbon compound or carbon-containing compound; and then converting the carbon compound or carbon-containing compound into the synthetic diamond. | 07-15-2010 |
| 20100178234 | Multilayer substrate and method for producing the same, diamond film and method for producing the same - The present invention is a multilayer substrate comprising, at least, a single crystal substrate, a diamond film vapor-deposited on the single crystal substrate, wherein the single crystal substrate is a single crystal Ir or a single crystal Rh and a method for producing a multilayer substrate comprising, at least, a step of vapor-depositing a diamond film on a single crystal substrate, wherein a single crystal Ir or a single crystal Rh is used as the single crystal substrate. As a result, there is provided a multilayer substrate having a high quality single crystal diamond film with a large area and with a high crystallinity as a continuous film in which the diamond and the single crystal substrate are not broken and a method for producing the multilayer substrate at low cost. | 07-15-2010 |
| 20100254884 | Production of Conductive Nanodiamond by Dynamic Synthesis Approaches - In certain implementations, a method of manufacturing electrically conductive nanodiamond particles involves providing at least one type of carbon-containing explosive material and at least one type of non-explosive material; wherein the non-explosive material contains at least one or more than one element or species other than nitrogen that serve as a nanodiamond dopant; mixing the carbon containing explosive material with the non-explosive material; detonating the mixture under conditions of negative oxygen balance in the presence of a cooling medium; purifying the product of detonation from incombustible impurities; and carrying out additional processing for activation or enhancement of electrical conductance. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract. | 10-07-2010 |
| 20100272627 | Multi-Faceted Diamond and Associated Methods - A method of making a multi-faceted diamond is provided. Such a method can include obtaining a diamond having a substantially euhedral morphology and a plurality of primary crystallographic faces and polishing a plurality of primary apexes defined by the primary crystallographic faces to form a plurality of secondary faces and secondary apexes. | 10-28-2010 |
| 20100278712 | Method for Creating Diamond Dust via Detonation of Carbon Dioxide and Reducing Agent Combinations - The present invention provides a method and formulation for the creation of a diamond-carbon bearing material of varying particle sizes. The material is a detonation by-product of explosive formulations that employ carbon dioxide as the oxidizing agent and a material, such as powdered magnesium, as the fuel for such detonation. | 11-04-2010 |
| 20100329965 | DIAMOND MATERIAL - A method of making fancy pale blue or fancy pale blue/green CVD diamond material is described. The method comprises irradiating single crystal diamond material that has been grown by a CVD process with electrons to introduce isolated vacancies into the diamond material, the irradiated diamond material having (or after a further post-irradiation treatment having) a total vacancy concentration [V | 12-30-2010 |
| 20110014112 | METHOD FOR GROWING MONOCRYSTALLINE DIAMONDS - A method of forming mono-crystalline diamond by chemical vapour deposition, the method comprising the steps of: (a) providing at least one diamond seed; (b) exposing the seed to conditions for growing diamond by chemical vapour deposition, including supplying reaction gases that include a carbon-containing gas and hydrogen for growing diamond and include a nitrogen-containing gas; and (c) controlling the quantity of nitrogen-containing gas relative to other gases in the reaction gases such that diamond is caused to grow by step-growth with defect free steps without inclusions. The nitrogen is present in the range of 0.0001 to 0.02 vol %. Diborane can also be present in a range of from 0.00002 to 0.002 vol %. The carbon-containing gas can be methane. | 01-20-2011 |
| 20110059006 | Methods for Production of Carbon Nanomaterials in the Presence of a Carbon Black Catalyst - A method and apparatus for production of nanoscale materials is disclosed. In the preferred embodiments, the invention is scalable and tunable to reliably produce nanoscale materials of specifically desired qualities and at relatively high levels of purity. In a preferred embodiment, combustible gas is discharged onto a substrate through a multi-zone flame facilitating the formation of nanoscale materials such as single and multi-wall nanotubes. | 03-10-2011 |
| 20110150745 | SINGLE CRYSTAL DIAMOND MATERIAL - A method of producing a grown single crystal diamond substrate comprising:
| 06-23-2011 |
| 20110165057 | PLASMA CVD DEVICE, DLC FILM, AND METHOD FOR DEPOSITING THIN FILM - To provide a plasma CVD device capable of increasing voltage V | 07-07-2011 |
| 20110171108 | MICROWAVE-ASSISTED SYNTHESIS OF NANODIAMONDS FROM TANNIN, LIGNIN, ASPHALT, AND DERIVATIVES - A method of synthesizing nanodiamonds. In one embodiment, the present invention provides a method of synthesizing nanodiamonds, which includes the step of subjecting an amount of tannin to a microwave radiation for a duration of time effective to produce a plurality of nanodiamonds. | 07-14-2011 |
| 20110280790 | Production of Large, High Purity Single Crystal CVD Diamond - The invention relates to single crystal diamond with optical quality and methods of making the same. The diamond possesses an intensity ratio of the second-order. Raman peak to the fluorescence background of around 5 or greater. | 11-17-2011 |
| 20120076717 | Separation of Diamond from Gangue Minerals - The present invention relates to a method for separating diamond from gangue minerals. In particular, this method relates to the addition of a first reagent or reagents which contact the diamond in diamond ore slurry to at least partially remove hydrophilic coatings from the diamond surfaces. A second reagent or reagents may also be added to the slurry so that the reagent may adsorb on the diamond surfaces and thereby enhance the hydrophobicity of diamonds. The increase in hydrophobicity may improve the flotation of diamonds. | 03-29-2012 |
| 20120195819 | METHOD AND SYSTEM TO PRODUCE LARGE PARTICLE DIAMOND - The invention provides methods and systems for producing large size diamonds. The methods include using carbon containing gases and supplementary gases to form reaction zones that are suitable for diamonds to grow; controlling the temperatures that are suitable for diamonds to grow; and keeping the small size seeds in motion in the reaction zones to form large size diamonds. The method provides controlling the high temperature endurable small size seeds at suitable temperatures for diamonds to grow and keep them in motion in the reaction zones. The invention also provides systems that allow all the surfaces of the high temperature endurable small size seeds continually extend to form diamonds, then to form large size diamonds. The invention provides a large-scale, low cost production of large size diamonds. | 08-02-2012 |
| 20120258035 | POLYCRYSTALLINE DIAMOND AND METHOD OF MANUFACTURING THE SAME - Polycrystalline diamond includes cubic diamond and hexagonal diamond, and a ratio of X-ray diffraction peak intensity of a (100) plane of the hexagonal diamond to X-ray diffraction peak intensity for a (111) plane of cubic diamond is not lower than 0.01%. In addition, a present method of manufacturing polycrystalline diamond includes the steps of preparing a non-diamond carbon material having a degree of graphitization not higher than 0.58 and directly converting the non-diamond carbon material to cubic diamond and hexagonal diamond and sintering the non-diamond carbon material, without adding any of a sintering agent and a binder, under pressure and temperature conditions at which diamond is thermodynamically stable. | 10-11-2012 |
| 20120315211 | Acoustic Processing of Carbon and Graphite Particulates - The present disclosure is directed to the use of high-intensity acoustic cavitation, including carried out under pressure in cavitation chambers to convert graphite powder or similar carbon based substances into low-cost, industrial diamonds. In some aspects, this can facilitate the development of an economical manufacturing process for the production of superior-quality, industrial-grade diamond materials. | 12-13-2012 |
| 20120315212 | DIAMOND PARTICLES AND METHOD FOR OBTAINING DIAMOND PARTICLES FROM AGGREGATE STRUCTURES - A method for obtaining diamond particles from aggregate structures which contain diamond particles with an average particle diameter of less than 10 nm. The aggregate structures are heated under a gas atmosphere such that the diamond particles are obtained from the aggregate structures. It is essential that the aggregate structures are heated under a gas atmosphere which, in terms of reactive gases, contains hydrogen gas in a proportion of at least 80%. | 12-13-2012 |
| 20130121909 | NANODIAMOND MATERIAL, METHOD AND DEVICE FOR PURIFYING AND MODIFYING A NANODIAMOND - A method of purification and modification of carbon nanoproduct involves forcing a mixture of the dehydrated air or oxygen or ozone or any combination thereof through the carbon nanoproduct under pressure up to 0.8 MPa accompanied by mixing of the carbon nanoproduct and heating in the temperature range from +20 to +550° C. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract. | 05-16-2013 |
| 20130202518 | SINGLE CRYSTAL DIAMOND PREPARED BY CVD - A single crystal diamond prepared by CVD and having one or more electronic characteristics; making the diamond suitable for electronic applications. Also provided is a method of making the single crystal CVD diamond. | 08-08-2013 |
| 20130330265 | Plasma Treatment to Strengthen Diamonds - The physical properties of a diamond are altered by:
| 12-12-2013 |
| 20130336873 | DIAMOND GROWTH USING DIAMONDOIDS - Methods of growing diamond and resulting diamond nanoparticles and diamond films are described herein. An example of a method of growing diamond includes: (1) anchoring diamondoids to a substrate via chemical bonding between the diamondoids and the substrate; (2) forming a protective layer over the diamondoids; and (3) performing chemical vapor deposition using a carbon source to induce diamond growth over the protective layer and the diamondoids. | 12-19-2013 |
| 20140004031 | METHOD OF PURIFYING NANODIAMOND POWDER AND PURIFIED NANODIAMOND POWDER | 01-02-2014 |
| 20140004032 | METHOD AND APPARATUS FOR RAPID GROWTH OF DIAMOND FILM | 01-02-2014 |
| 20140037532 | METHOD FOR FABRICATING CARBON ALLOTROPES - A method of fabricating a carbon allotrope is disclosed. The method includes forming an intermediate carbon template from a carbon feedstock; and creating a pressure and temperature in the carbon template suitable for fabrication of the carbon allotrope from the intermediate carbon template. The pressure and temperature may be created from a shockwave resulting from collapse of a bubble formed during a bubble cavitation process. | 02-06-2014 |
| 20140161710 | METHOD AND SYSTEM FOR CONTROLLED SYNTHESIS OF NANODIAMONDS - Method and system for controlled nanodiamond synthesis based on treating of a specially prepared solid carbon source target including carbon containing material in liquid media by irradiation energy beam focused at a predetermined distance from the target surface and having parameters to produce a light-hydraulic effect impacting the target surface and leading to the forming of diamond nanocrystals. | 06-12-2014 |
| 20140170055 | POLYCRYSTALLINE DIAMOND AND MANUFACTURING METHOD THEREOF - Nano polycrystalline diamond is composed of carbon and a plurality of impurities other than carbon. A concentration of each of the plurality of impurities is not higher than 0.01 mass %, and the nano polycrystalline diamond has a crystal grain size (a maximum length) not greater than 500 nm. The nano polycrystalline diamond can be fabricated by preparing graphite in which a concentration of an impurity is not higher than 0.01 mass % and converting graphite to diamond by applying an ultra-high pressure and a high temperature to graphite. | 06-19-2014 |
| 20140219907 | SINGLE-CRYSTAL DIAMOND AND MANUFACTURING METHOD THEREOF - Single-crystal diamond is composed of carbon in which a concentration of a carbon isotope | 08-07-2014 |
| 20140219908 | METHODS OF PRODUCING COILED CARBON NANOTUBES - Methods and systems for producing coiled nanotubes. At least one exemplary method of producing coiled carbon nanotubes of the present disclosure comprises the steps of reacting a carbon feedstock and a catalyst within a reaction vessel to produce a reaction product comprising at least about 5% coiled carbon nanotubes, wherein the carbon feedstock comprises either (i) a mixture of a hydrocarbon and water or (ii) an alcohol, and wherein the catalyst comprises at least one Group VIB or VIIIB transition metal. | 08-07-2014 |
| 20140271441 | PROCESS FOR PURE CARBON PRODUCTION - The disclosure provides for methods of oxidizing carbide anions, or negative ions, from salt like carbides at low temperatures below about 600° C. In another aspect, the disclosure provides for reactions with intermediate transition metal carbides. In yet another aspect, the disclosure provides for a system of reactions where salt-like carbide anions and intermediate carbide anions are oxidized to produce pure carbon of various allotropes. | 09-18-2014 |
| 20140286851 | Combinational synthesis of diamond - A combinatorial synthesis of the diamond unit cell is disclosed wherein a carbon atom free of meta-stable radical impurities reacts with cyclic hydrocarbon compounds or heterocyclic compounds whose structure is tetrahedral or nearly tetrahedral. Reactions conducted in the vapor phase and in the solid state are disclosed. | 09-25-2014 |
| 20140356276 | OPTICAL QUALITY DIAMOND MATERIAL - A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications. | 12-04-2014 |
| 20150050207 | DETONATION NANODIAMOND MATERIAL PURIFICATION METHOD AND PRODUCT THEREOF - A mild, acid- and alkali-free purification method of detonation nanodiamond material from water-insoluble metal-containing impurities and product obtained thereof. The products thus obtained include nanodiamond and diamond-containing detonation blend. The method is implemented by an impact treatment of the detonation nanodiamond material with aqueous or water organic solutions of chelating agents in concentrations 0.5-20 wt. % at elevated temperature, wherein the weight-percent ratio of the detonation nanodiamond material to an undiluted chelating agent is substantially 1 to 0.2. Impact treatment of the detonation nanodiamond material in chelating agent solution may include boiling, ultrasonication, cavitational disintegration, and harsh treatment in sealed chamber at temperatures of up to about 300° C. and high pressure. The method provides at least 5-fold reduction of metal-containing impurities in the resulting product, wherein the content of such elements as chromium and iron is reduced to negligible amounts. | 02-19-2015 |
| 20150125379 | METHOD OF PURIFYING NANODIAMOND POWDER AND PURIFIED NANODIAMOND POWDER - A method of purifying a nanodiamond powder includes preparing the nanodiamond powder, heating the nanodiamond powder at between 450° C. and 470° C. in an atmosphere including oxygen, performing a hydrochloric acid treatment on the heated nanodiamond powder, and performing a hydrofluoric acid treatment on the nanodiamond powder obtained after performing the hydrochloric acid treatment. | 05-07-2015 |
| 20150292107 | HEXAGONAL DIAMOND SINGLE PHASE BULK SINTERED BODY AND METHOD OF MANUFACTURING THE SAME - A method capable of obtaining pure single phase hexagonal diamond in an industrially usable size (bulk) is provided. Highly oriented and highly crystallized graphite having a mosaic spread of 5° or less is used as a starting material, and is subjected to a temperature ranging from 1000 to 1500° C. at a pressure ranging from 20 to 25 GPa. The size of the bulk sintered body of pure single-phase hexagonal diamond obtained by this method depends on the size of the starting graphite. However, as long as the pressure and temperature can be entirely provided (i.e., as long as the adequate high pressure and temperature are applied to the sample chamber of high pressure apparatus), any desired size can be obtained. | 10-15-2015 |
| 20150353363 | Method and System to Produce Large Size Diamonds - The invention provides methods and systems for producing large size diamonds. The methods include using carbon containing gases and supplementary gases to form reaction zones that are suitable for diamonds to grow; controlling the temperatures that are suitable for diamonds to grow; and keeping the small size seeds in motion in the reaction zones to form large size diamonds. The method provides controlling the high temperature endurable small size seeds at suitable temperatures for diamonds to grow and keep them in motion in the reaction zones. The invention also provides systems that allow all the surfaces of the high temperature endurable small size seeds continually extend to form diamonds, then to form large size diamonds. The invention provides a large-scale, low cost production of large size diamonds. | 12-10-2015 |
| 20160002049 | Process for Pure Carbon Production, Compositions, and Methods Thereof - The disclosure provides for methods of oxidizing carbide anions, or negative ions, from salt like carbides at temperatures from about 150 ° C. to about 750 ° C. In another aspect, the disclosure provides for reactions with intermediate transition metal carbides. In yet another aspect, the disclosure provides for a system of reactions where salt-like carbide anions and intermediate carbide anions are oxidized to produce pure carbon of various allotropes. | 01-07-2016 |
| 20160016805 | METHOD FOR PRODUCING SYNTHETIC DIAMONDS - A method of producing diamonds comprises the steps of providing a nano-structured carbonaceous material, and thermally treating the nano-structured carbonaceous material in an oxygen-containing environment so as to produce diamonds. The nano-structured carbonaceous material may be materials such as carbon nano-particles, carbon nano-tubes and carbon nano-scrolls. It is preferred that the nano-structured carbonaceous material is created by electrochemical erosion of graphite. Thermal treatment to form the diamonds may occur in a temperature window within which the nano-structured carbonaceous material oxidises but diamond crystals are relatively more stable. | 01-21-2016 |
| 20160137510 | ULTRAHARD NANOTWINNED DIAMOND BULK MATERIAL AND METHOD FOR PREPARING THE SAME - The present invention relates to ultrahard nanotwinned diamond bulk materials and synthetic method thereof. In particular, the present invention discloses a diamond bulk material containing high density of nanocrystalline twins and synthetic method thereof, in which a nanotwinned diamond bulk is synthesized from particles of nanospherical onion-like carbon without diamond core (preferably with a size of 5-70 nm) as raw materials by using high temperature and high pressure synthesis. As compared with the prior art, the nanotwinned diamond bulk obtained according to the present invention has a much higher hardness than that of single crystal diamond and that of ultrahard polycrystalline diamond. The nanotwinned diamond bulk has wide prospects in various applications, including geological drilling, machining fields such as high speed cutting and precision and ultra-precision machining, abrasives, drawing dies, and special optics as well as other fields. | 05-19-2016 |
| 20160167970 | Systems and Methods for the Manufacture of Atomically-Precise Products | 06-16-2016 |
