Diamond Patents (Class 423/446)
  • Patent number: 8501144
    Abstract: Methods of manufacturing polycrystalline diamond are disclosed. More particularly, a mixture including diamond and fullerenes may be provided. Further, the mixture may be exposed to a high pressure, high temperature sintering process. In addition, a volume of polycrystalline diamond bonded to a substrate may be formed by providing a mixture including diamond and fullerenes and exposing the mixture to a high pressure, high temperature sintering process. A drill bit for drilling a subterranean formation is disclosed. Further, polycrystalline diamond compacts are disclosed including polycrystalline diamond bonded to a substrate, wherein the polycrystalline diamond includes less than about 1% by weight or is substantially free of non-fullerenes, non-diamond carbon. Polycrystalline diamond exhibiting an increased diamond volume fraction due to the presence of fullerenes during manufacture relative to polycrystalline diamond formed without fullerenes is disclosed.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: August 6, 2013
    Assignee: US Synthetic Corporation
    Inventor: Kenneth E. Bertagnolli
  • Patent number: 8480993
    Abstract: A diamond reference standard contains a diamond composite of 60-90% diamond crystals and 10-40% silicon carbide binding agent doped with a plurality of elements. The standard is prepared by doping a diamond composite containing a silicon carbide binder with a plurality of elements, the presence of which can readily be detected using a variety of instruments, e.g. a mass spectrometer.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: July 9, 2013
    Assignee: Her Majesty the Queen in right of Canada as represented by the Solicitor General acting through the Commissoner of the Royal Canadian Mounted Police
    Inventors: David Ballantyne, Claude Dalpe
  • Publication number: 20130143022
    Abstract: The present invention relates to a method for producing diamond layers, wherein firstly, in a first growing step, diamond is grown on a growing surface of a off axis or a off-axis heterosubstrate in such a way that a texture width, in particular a polar and/or azimuthal texture width, of a diamond layer produced during the growth decreases with increasing distance from the substrate and then, in a second growing step, diamond is grown in such a way that the texture width of the diamond layer remains substantially constant as the distance from the substrate further increases, and lattice planes of the substrate being inclined by an angle greater than zero with respect to the growing surface.
    Type: Application
    Filed: June 16, 2011
    Publication date: June 6, 2013
    Applicant: UNIVERSITAET AUGSBURG
    Inventors: Matthias Schreck, Stefan Gsell, Martin Fischer
  • Patent number: 8454714
    Abstract: Growth precursors to form discrete superabrasive particles including associated methods are disclosed. Such growth precursor may include a crystalline seed, an initiation material, and a feed material. The initiation material may substantially encompass the crystalline seed, and may include a catalyst and a raw material source. The raw material source makes up less than 50 wt % of the initiation material. The feed material may contact the initiation material and may also include raw material source and catalyst. The catalyst may be present in less than 50 wt % in the feed material. In one aspect, the growth precursor may be configured to form diamond particles.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: June 4, 2013
    Inventor: Chien-Min Sung
  • Publication number: 20130121909
    Abstract: 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.
    Type: Application
    Filed: December 18, 2012
    Publication date: May 16, 2013
    Inventors: Igor Leonidovich Petrov, Yuriy Alekseevich Skryabin, Olga Alexander Shenderova
  • Patent number: 8420043
    Abstract: A nano-crystal diamond film synthesized on a substrate and containing, as a major component, nano-crystal diamond having a grain diameter from 1 nm to less than 1000 nm. This nano-crystal diamond film can be formed on a substrate by means of a plasma CVD method using a raw material gas containing a hydrocarbon and hydrogen, allowing the formation of the nano-crystal diamond film to take place outside the plasma region. This nano-crystal diamond film is applicable to the manufacture of an electrochemical device, an electrochemical electrode, a DNA chip, an organic electroluminescent device, an organic photoelectric receiving device, an organic thin film transistor, a cold electron-emission device, a fuel cell and a catalyst.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: April 16, 2013
    Assignees: Toppan Printing Co., Ltd., National Institute for Materials Science
    Inventors: Hidenori Gamo, Toshihiro Ando
  • Publication number: 20130081335
    Abstract: A method of forming polycrystalline diamond includes forming metal nanoparticles having a carbon coating from an organometallic material; combining a diamond material with the metal nanoparticles having the carbon coating; and processing the diamond material and the metal nanoparticles having the carbon coating to form the polycrystalline diamond. Processing includes catalyzing formation of the polycrystalline diamond by the metal nanoparticles; and forming interparticle bonds that bridge the diamond material by carbon from the carbon coating.
    Type: Application
    Filed: October 4, 2011
    Publication date: April 4, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Oleg A. Mazyar, Michael H. Johnson, Anthony A. DiGiovanni, Dan E. Scott
  • Patent number: 8398947
    Abstract: 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.
    Type: Grant
    Filed: August 27, 2011
    Date of Patent: March 19, 2013
    Assignee: Mineral and Coal Technologies, Inc.
    Inventors: Roe Hoan Yoon, Dmitri Kouznetsov
  • Patent number: 8367207
    Abstract: The invention relates to a hydrogenated amorphous carbon coating and to a method for the production thereof. It also relates to devices having such a coating. The method of the invention consists in producing a hydrogenated amorphous carbon coating comprising at least two layers of hydrogenated amorphous carbon, each of said layers having chemical compositions and physical and mechanical properties that are identical, and with thicknesses that are identical or different. The coating of the invention finds many applications, in particular in the mechanical field for parts subject to considerable wear and rubbing problems. It may also be applicable, in particular, in the field of surgical implants and in the MEMS (microelectromechanical systems) field.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: February 5, 2013
    Assignees: Commissariat a l'Energie Atomique et aux Energies Alternative, Centre National de la Recherche Scientifique
    Inventors: Caroline Chouquet, Cédric Ducros, Frédéric Sanchette
  • Patent number: 8361429
    Abstract: Embodiments relate to methods of fabricating PCD materials by subjecting a mixture that exhibits a broad diamond particle size distribution to an HPHT process, PCD materials so-formed, and PDCs including a polycrystalline diamond table comprising such PCD materials. In an embodiment, a PCD material includes a plurality of bonded diamond grains that exhibit a substantially unimodal diamond grain size distribution characterized, at least in part, by a parameter ? that is less than about 1.0. ? = x 6 · ? , where x is the average grain size of the substantially unimodal diamond grain size distribution, and ? is the standard deviation of the substantially unimodal diamond grain size distribution.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: January 29, 2013
    Assignee: US Synthetic Corporation
    Inventors: Michael A. Vail, Kenneth E. Bertagnolli, Jason Wiggins, Jiang Qian, David P. Miess
  • Patent number: 8357625
    Abstract: An object of the present invention is to provide a catalyst exhibiting excellent performance particularly in partial oxidation reaction. Another object is to provide a method for efficiently producing carboxylic acid or carboxylic anhydride through vapor-phase partial oxidation of an organic compound by use of an oxygen-containing gas in the presence of the catalyst. The catalyst contains (1) diamond; (2) at least one species selected from among Group 5 transition element oxides, collectively called oxide A; and (3) at least one species selected from among Group 4 transition element oxides, collectively called oxide B. The method for producing a carboxylic acid or a carboxylic anhydride includes subjecting an organic compound to vapor phase partial oxidation by use of an oxygen-containing gas in the presence of the catalyst, wherein the organic compound is an aromatic compound having one or more substituents in a molecule thereof, the substituents each including a carbon atom bonded to an aromatic ring.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: January 22, 2013
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventor: Atsushi Okamoto
  • Publication number: 20120315212
    Abstract: 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%.
    Type: Application
    Filed: January 25, 2011
    Publication date: December 13, 2012
    Applicant: Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.
    Inventor: Oliver Williams
  • Publication number: 20120315211
    Abstract: 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.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 13, 2012
    Applicant: IMPULSE DEVICES INC.
    Inventor: Naresh Mahamuni
  • Publication number: 20120312227
    Abstract: Disclosed herein is an apparatus and method for growing a diamond. The apparatus for growing a diamond comprises: a reaction cell that is configured to grow the diamond therein; a main heater including a main heating surface that is arranged along a first inner surface of the reaction cell; and a sub-heater including a sub-heating surface that is arranged along a second inner surface of the reaction cell, the second inner surface being non-parallel with the first inner surface.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 13, 2012
    Applicant: GEMESIS DIAMOND COMPANY
    Inventors: Hexiang ZHU, Karl PEARSON
  • Patent number: 8309050
    Abstract: PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an average particle size of about 0.03 mm or greater. At least a portion of the diamond body has a high diamond volume content of greater than about 93 percent by volume. The entire diamond body can comprise high volume content diamond or a region of the diamond body can comprise the high volume content diamond. The diamond body includes a working surface, a first region substantially free of the catalyst material, and a second region that includes the catalyst material. At least a portion of the first region extends from the working surface to depth of from about 0.01 to about 0.1 mm.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: November 13, 2012
    Assignee: Smith International, Inc.
    Inventors: Madapusi K. Keshavan, Youhe Zhang, Yuelin Shen, Anthony Griffo, Michael Janssen
  • Publication number: 20120258035
    Abstract: 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.
    Type: Application
    Filed: August 10, 2011
    Publication date: October 11, 2012
    Inventors: Hitoshi Sumiya, Katsuko Yamamoto, Takeshi Sato, Keiko Arimoto
  • Patent number: 8282796
    Abstract: A carbonaceous substrate of the present invention is such that an X-ray diffraction pattern thereof is a complex profile and includes at least two (002) diffraction lines; and the substrates contains crystallites with different interlayer spacings. Further, in the X-ray diffraction pattern, (002) diffraction lines between 2?=10° and 2?=30° have an asymmetric shape; and the X-ray diffraction pattern includes at least two pattern components which are a diffraction line whose center is at 2?=26° and a diffraction line whose center is at a lower angle than 2?=26°. Further, the carbonaceous substrate contains crystals wherein the periodic distance d002 is 0.34 nm or more and the crystallite size Lc002 is 20 nm or less based on the X-ray diffraction lines. An electrodes for fluorine electrolysis of the present invention includes the carbonaceous substrate on which a conductive diamond thin film is formed.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 9, 2012
    Assignee: Toyo Tanso Co., Ltd.
    Inventors: Rie Tao, Takanori Kawano, Yoshio Shodai
  • Publication number: 20120252999
    Abstract: Systems and methods of producing chemical compounds are disclosed. An example chemical production system includes a combustion chamber having intake ports for entry of a gas mixture. An igniter ignites the gas mixture in the intake chamber to facilitate a reaction at a high temperature and high pressure. A nozzle restricts exit of the ignited gas mixture from the combustion chamber. An expansion chamber cools the ignited gas. The expansion chamber has an exhaust where the cooled gas exits the expansion chamber. A chemical compound product is formed in the expansion chamber.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 4, 2012
    Inventor: Bruce H. Peters
  • Publication number: 20120225308
    Abstract: 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.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Hitoshi NOGUCHI
  • Publication number: 20120225307
    Abstract: 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.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Hitoshi Noguchi
  • Patent number: 8252263
    Abstract: 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.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: August 28, 2012
    Inventor: Chien-Min Sung
  • Publication number: 20120213939
    Abstract: The present invention provides an enhanced plating for electro and electroless plating. There is provided a method of plating a surface to be plated, the method comprises premixing a plating solution with additive. The additive comprises diamond particles is also provided.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 23, 2012
    Applicant: Inspiraz Technology Pte Ltd
    Inventors: Kim Wee TAN, Sien Ruey WONG
  • Patent number: 8246746
    Abstract: The present invention is directed to new laser-related uses for single-crystal diamonds produced by chemical vapor deposition. One such use is as a heat sink for a laser; another such use is as a frequency converter. The invention is also directed to a ?(3) nonlinear crystalline material for Raman laser converters comprising single crystal diamond.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: August 21, 2012
    Assignee: Carnegie Institution of Washington
    Inventors: Russell J. Hemley, Ho-Kwang Mao, Chih-Shiue Yan
  • Publication number: 20120192785
    Abstract: A multi-layer structure in a reaction cell for a diamond growth is provided. The multi-layer structure includes: a diamond seed; a first metal catalyst layer provided on the diamond seed, the first metal catalyst layer containing a first concentration of carbon; a second metal catalyst layer provided on the first metal layer, the second metal catalyst layer containing a second concentration of carbon that is higher than the first concentration; and a carbon source layer provided on the second metal layer.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 2, 2012
    Applicant: GEMESIS DIAMOND COMPANY
    Inventors: Hexiang Zhu, Karl Pearson, Joo Ro Kim
  • Publication number: 20120195819
    Abstract: 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.
    Type: Application
    Filed: April 27, 2010
    Publication date: August 2, 2012
    Inventor: Xi Chu
  • Patent number: 8226922
    Abstract: A diamond sintered body conventionally used in a cutting tool or the like includes an iron group metal element as a sintering aid, and therefore has a problem in heat resistance. A diamond sintered body not including the iron group metal, on the other hand, does not have sufficient mechanical strength to be used as a tool material, and also does not have conductivity, which makes electrical discharge machining impossible, and thus processing thereof is difficult. A diamond polycrystalline body having high heat resistance and mechanical strength and having conductivity enabling electrical discharge machining is obtained by using only an amorphous or fine graphite-type carbon material as a starting material, adding boron thereto and concurrently performing conversion into diamond and sintering in an ultra-high pressure and temperature condition.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: July 24, 2012
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Hitoshi Sumiya
  • Patent number: 8192713
    Abstract: A method of incorporating a mark of origin, such as a brand mark, or fingerprint in a CVD single crystal diamond material, includes the steps of providing a diamond substrate, providing a source gas, dissociating the source gas thereby allowing homoepitaxial diamond growth, and introducing in a controlled manner a dopant into the source gas in order to produce the mark of origin or fingerprint in the synthetic diamond material. The dopant is selected such that the mark of origin or fingerprint is not readily detectable or does not affect the perceived quality of the diamond material under normal viewing conditions, but which mark of origin or fingerprint is detectable or rendered detectable under specialised conditions, such as when exposed to light or radiation of a specified wavelength, for example. Detection of the mark of origin or fingerprint may be visual detection or detection using specific optical instrumentation, for example.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: June 5, 2012
    Inventors: Daniel James Twitchen, Geoffrey Alan Scarsbrook, Philip Maurice Martineau, Paul Martyn Spear
  • Patent number: 8187380
    Abstract: Synthetic monocrystalline diamond compositions having one or more monocrystalline diamond layers formed by chemical vapor deposition, the layers including one or more layers having an increased concentration of one or more impurities (such as boron and/or isotopes of carbon), as compared to other layers or comparable layers without such impurities. Such compositions provide an improved combination of properties, including color, strength, velocity of sound, electrical conductivity, and control of defects. A related method for preparing such a composition is also described, as well as a system for use in performing such a method, and articles incorporating such a composition.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: May 29, 2012
    Assignee: Apollo Diamond, Inc
    Inventors: Robert C. Linares, Patrick J. Doering
  • Patent number: 8182562
    Abstract: A slurry containing a plurality of monocrystalline diamond particles, wherein the average surface roughness of said particles is less than about 0.95; a major vehicle selected from the group of water-based vehicles, glycol-based vehicles, oil-based vehicles or hydrocarbon-based vehicles and combinations thereof; and one or more optional additives.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: May 22, 2012
    Assignee: Diamond Innovations Inc.
    Inventors: Timothy Francis Dumm, Kan-Yin Ng
  • Patent number: 8172916
    Abstract: An aqueous suspension liquid of finely divided diamond particles comprising 0.05 to 160 parts by weight of a finely divided diamond particles in 1000 parts of water, wherein; (i) the finely divided diamond particles have an element composition consisting mainly of 72 to 89.5% by weight of carbon, 0.8 to 1.5% of hydrogen, 1.5 to 2.5% of nitrogen, and 10.5 to 25.0% of oxygen; (ii) and, almost all of said diamond particles are in the range of 2 mu to 50 nm in diameters thereof (80% or more by number average, 70% or more by weight average), (iii) and, said finely divided diamond particles exhibit a strongest peak of the intensity of the Bragg angle at 43.9° (20±20), strong and characteristic peaks at 73.5° (20±20) and 95° (20±2°), a warped halo at 17? (20±2?), and no peak at 26.5°, by X-ray diffraction (XRD) spectrum analysis using Cu-Ku radiation when dried, (iv) and, specific surface area of said diamond particles when dry state powder is not smaller than 1.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: May 8, 2012
    Inventors: Tadamasa Fujimura, Masato Sone, Valeri Yu Dolmatov, Shigeru Shiozaki
  • Publication number: 20120107212
    Abstract: A method of treating a diamond, the method comprising: (i) providing a liquid metal saturated with carbon with respect to graphite precipitation; (ii) lowering the temperature of the liquid metal such that the liquid metal is saturated with carbon with respect to diamond precipitation; (iii) immersing a diamond in the liquid metal; and (iv) removing the diamond from the metal.
    Type: Application
    Filed: July 19, 2010
    Publication date: May 3, 2012
    Applicant: DESIGNED MATERIALS LIMITED
    Inventors: Philip H. Taylor, A. Marshall Stoneham
  • Patent number: 8147790
    Abstract: Embodiments of the invention relate to methods of fabricating polycrystalline diamond (“PCD”) exhibiting enhanced diamond-to-diamond bonding by carbon pumping, and PCD and polycrystalline diamond compacts formed by such methods. In an embodiment of a method of fabricating PCD, a plurality of diamond crystals and a metal-solvent catalyst may be provided. The diamond crystals and metal-solvent catalyst may be subjected to a first pressure-temperature condition during which carbon is dissolved in the metal-solvent catalyst. After subjecting the diamond crystals and metal-solvent catalyst to the first pressure-temperature condition, the diamond crystals and metal-solvent catalyst may be subjected to a second pressure-temperature condition at which diamond is stable.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: April 3, 2012
    Assignee: US Synthetic Corporation
    Inventors: Michael A. Vail, Kenneth E. Bertagnolli
  • Publication number: 20120076717
    Abstract: 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.
    Type: Application
    Filed: August 27, 2011
    Publication date: March 29, 2012
    Inventors: Roe Hoan Yoon, Dmitri Kouznetsov
  • Patent number: 8133320
    Abstract: A laser has a laser material in thermal contact with a diamond, such that the diamond is operable to carry heat away from the laser material. In further embodiments, the diamond has a reduced nitrogen content, is a reduced carbon-13 content, is a monocrystalline or multilayer low-strain diamond, or has a thermal conductivity of greater than 2200 W/mK.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: March 13, 2012
    Assignee: Apollo Diamond, Inc.
    Inventor: Robert Linares
  • Publication number: 20120051996
    Abstract: Single crystal diamond having a high chemical purity i.e. a low nitrogen content and a high isotopic purity i.e. a low 13C content, methods for producing the same and a solid state system comprising such single crystal diamond are described.
    Type: Application
    Filed: July 22, 2009
    Publication date: March 1, 2012
    Inventors: Geoffrey Alan Scarsbrook, Daniel James Twitchen, Matthew Lee Markham
  • Publication number: 20120045615
    Abstract: An apparatus, method and products thereof provide an accelerated neutral beam derived from an accelerated gas cluster ion beam for processing materials.
    Type: Application
    Filed: August 23, 2011
    Publication date: February 23, 2012
    Applicant: EXOGENESIS CORPORATION
    Inventors: Sean R. Kirkpatrick, Allen R. Kirkpatrick
  • Publication number: 20120040868
    Abstract: Disclosed is a combinatorial synthesis of Diamond wherein a first reactive species is produced by catalytic treatment of Acetylene, a second reactive species is produced by decomposition of a hydrocarbon source having a low Hydrogen-to-Carbon ratio using a high energy discharge, and the two reactive species so obtained are combined in the vapor phase to yield Diamond without the need of post-treatments. The reaction is efficient and affords Diamond under mild conditions with high purity such that it may be useful for producing Diamond for semiconductor and microelectronics applications.
    Type: Application
    Filed: August 5, 2011
    Publication date: February 16, 2012
    Inventor: Daniel Hodes
  • Publication number: 20120032116
    Abstract: A method for producing a diamond material by contacting a fluorinated precursor with a hydrocarbon in a reactor and forming a combination in the absence of a metal catalyst; increasing the pressure of the reactor to a first pressure; heating the combination under pressure to form a material precursor; cooling the material precursor; and forming a diamond material.
    Type: Application
    Filed: August 5, 2011
    Publication date: February 9, 2012
    Applicant: UNIVERSITY OF HOUSTON SYSTEM
    Inventors: Valery N. KHABASHESKU, Valery A. DAVYDOV, Alexandra V. RAKHMANINA
  • Patent number: 8110171
    Abstract: A method for changing the color of a diamond. The method comprises placing the diamond in a substrate holder in a chemical vapor deposition (CVD) equipment. The CVD equipment is maintained at pressures near or below atmospheric pressure. A mixture of gases including hydrogen is introduced inside the CVD equipment. The introduced mixture of gases is energized by using microwave radiation to heat the diamond to temperatures above 1400° C. Then, the diamond is maintained at temperatures above 1400° C. for few seconds to few hours.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: February 7, 2012
    Inventors: Rustum Roy, Rajneesh Bhandari
  • Publication number: 20120011779
    Abstract: Embodiments relate to methods of fabricating PCD materials by subjecting a mixture that exhibits a broad diamond particle size distribution to an HPHT process, PCD materials so-formed, and PDCs including a polycrystalline diamond table comprising such PCD materials. In an embodiment, a PCD material includes a plurality of bonded diamond grains that exhibit a substantially unimodal diamond grain size distribution characterized, at least in part, by a parameter ? that is less than about 1.0. ? = x 6 · ? , where x is the average grain size of the substantially unimodal diamond grain size distribution, and ? is the standard deviation of the substantially unimodal diamond grain size distribution.
    Type: Application
    Filed: September 26, 2011
    Publication date: January 19, 2012
    Applicant: US SYNTHETIC CORPORATION
    Inventors: Michael A. Vail, Kenneth E. Bertagnolli, Jason Wiggins, Jiang Qian, David P. Miess
  • Publication number: 20120003479
    Abstract: The invention is related to a technique that grafts polymer onto a surface of nano-diamonds, and the invention further provides applications relating to modification and dispersion of the nano-diamonds. The features of the technique are single step, one pot, low cost, and high yield, and therefore the technique has high potential for commercialization. The invention also provides a method for graphitizing monocrystalline nano-diamonds and polycrystalline nano-diamonds. Accordingly, the technique of modifying and polymer grafting can be used not only on ultra disperse diamonds but also on monocrystalline nano-diamonds with graphitized surfaces and polycrystalline nano-diamonds with graphitized surfaces.
    Type: Application
    Filed: November 16, 2010
    Publication date: January 5, 2012
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yu-Lin Hsin, Woan-Shiow Tserng, Ting-Yao Su
  • Patent number: 8088221
    Abstract: A system and method for growing diamond crystals from diamond crystal seeds by epitaxial deposition at low temperatures and atmospheric and comparatively low pressures. A solvent is circulated (by thermal convection and/or pumping), wherein carbon is added in a hot leg, transfers to a cold leg having, in some embodiments, a range of progressively lowered temperatures and concentrations of carbon via the circulating solvent, and deposits layer-by-layer on diamond seeds located at the progressively lower temperatures since as diamond deposits the carbon concentration lowers and the temperature is lowered to keep the solvent supersaturated. The solvent includes metal(s) or compound(s) that have low melting temperatures and transfer carbon at comparatively low temperatures. A controller receives parameter signals from a variety of sensors located in the system, processes these signals, and optimizes diamond deposition by outputting the necessary control signals to a plurality of control devices (e.g.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: January 3, 2012
    Inventor: Zalman M. Shapiro
  • Publication number: 20110311820
    Abstract: A hardfacing composition (32) that includes a plurality of hard particles (54) wherein the hard particles (54) include a mode particle size distribution, one particle size distribution smaller than the mode particle size distribution, and an other particle size distribution larger than the mode particle size distribution. There is an absence of any substantial fluctuations in the particle size distribution between the mode particle size distribution and the one particle size distribution. There is an absence of any substantial fluctuations in the particle size distribution between the mode particle size distribution and the other particle size distribution.
    Type: Application
    Filed: August 30, 2011
    Publication date: December 22, 2011
    Applicant: Kennametal Inc.
    Inventor: Moira E. MacLeod
  • Publication number: 20110305879
    Abstract: A component that is subject to tribological wear comprises a nano diamond layer on the surface thereof.
    Type: Application
    Filed: January 26, 2010
    Publication date: December 15, 2011
    Applicant: RÖSLER HOLDING GmbH & CO KG
    Inventor: Jan Reinmann
  • Patent number: 8071066
    Abstract: The present disclosure relates to methods for improving the quality of diamonds by eliminating internal defects, such as cracks and vacant volumes, without the use of filler materials such as glass, thereby improving the diamond's optical performance or appearance. More particularly, the disclosure relates to a method of curing defects in a genuine or synthetic diamond or other gemstone by using Atomic Layer Deposition (“ALD”) processes to form atomic layers within vacant volumes or cracks in the diamond or gemstone. Alternatively, ALD may be used to form crystalline layers of a new diamond or other gemstone.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: December 6, 2011
    Assignee: Laor Consulting, LLC
    Inventor: Herzel Laor
  • Publication number: 20110280790
    Abstract: 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.
    Type: Application
    Filed: May 17, 2011
    Publication date: November 17, 2011
    Applicant: Carnegie Institution of Washington
    Inventors: Russell J. Hemley, Yu-fei Meng, Chih-Shiue Yan, Ho-kwang Mao
  • Patent number: 8057775
    Abstract: Embodiments relate to methods of fabricating PCD materials by subjecting a mixture that exhibits a broad diamond particle size distribution to a HPHT process, PCD materials so-formed, and PDCs including a polycrystalline diamond table comprising such PCD materials. In an embodiment, a method includes subjecting a mixture to heat and pressure sufficient to form a PCD material. The mixture comprises a plurality of diamond particles exhibiting a diamond particle size distribution characterized, in part, by a parameter ? that is less than about 1.0, where ? = x 6 · ? , x is the average particle size of the diamond particle size distribution, and ? is the standard deviation of the diamond particle size distribution.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: November 15, 2011
    Assignee: US Synthetic Corporation
    Inventors: Michael A. Vail, Kenneth E. Bertagnolli, Jason Wiggins, Jiang Qian, David P. Miess
  • Publication number: 20110269629
    Abstract: Partially or fully saturated doped graphene materials are found to be superconducting. The saturation is with hydrogen or halogen. Doping is performed by substitution of carbon atoms or by applying an electric field. Diamond nano-rods are also found to be superconducting. These materials can be used in electronic devices having a gate.
    Type: Application
    Filed: February 2, 2011
    Publication date: November 3, 2011
    Applicant: ISIS INNOVATION LIMITED
    Inventors: Feliciano Giustino, Andrea C. Ferrari, Gianluca Savini
  • Patent number: 8043533
    Abstract: The present invention is to provide a diamond sintered compact having good conductivity together with the characteristics, such as hardness, thermal conductivity, thermal resistance, chemical stability, almost equal to those of a natural diamond. A boron-doped diamond sintered compact having good conductivity and high thermal resistance is produced by a sintering process, in which 90 to 99.9 wt. % of a boron-doped diamond powder and 0.1 to 10% wt. % of a powder comprising, one or more of carbonates including Mg, Ca, Sr or Ba, and/or one or more of composite carbonates composed by two or more of these elements, as a bonding phase component, are sintered together under Ht/HP conditions, and the bonding phase component melts and then fills into the space between the boron-doped diamond powder particles.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: October 25, 2011
    Assignee: Mitsubishi Materials Corporation
    Inventors: Itsuro Tajima, Akhmadi Eko Wardoyo, Osamu Fukunaga
  • Publication number: 20110225896
    Abstract: Methods of fabricating polycrystalline diamond elements and compacts using sp2-carbon-containing particles are disclosed. In an embodiment, a method of fabricating a polycrystalline diamond element includes mixing a plurality of sp2-carbon-containing particles and a plurality of diamond particles to form a mixture. An amount of the plurality of sp2-carbon-containing particles present in the mixture is effective to increase a thermal stability of the polycrystalline diamond element formed at least partially from the mixture. The method further includes sintering the mixture in the presence of a catalyst material to form the polycrystalline diamond element.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 22, 2011
    Applicant: US SYNTHETIC CORPORATION
    Inventor: Michael A. Vail