公开(公告)号：US20240286907A1

公开(公告)日：2024-08-29

申请号：US18590318

申请日：2024-02-28

Applicant: Board of Regents, The University of Texas System

Inventor： Benjamin Stein ,  Orlando Auciello

IPC: C01B32/26 ,  A01G18/20 ,  C01B32/28 ,  D01F9/16 ,  D06M11/58 ,  D06M11/81 ,  D06M101/40 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525

CPC classification number: C01B32/26 ,  C01B32/28 ,  D01F9/16 ,  D06M11/58 ,  D06M11/81 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  A01G18/20 ,  C01P2002/54 ,  C01P2002/60 ,  C01P2006/40 ,  D06M2101/40 ,  D10B2505/00

Abstract: The present disclosure teaches a method of processing chitin, including providing a source of chitin; and pyrolyzing at least a portion of the source of chitin using a microwave plasma. Pyrolyzing includes producing a nanostructured carbon material including at least one of diamond, ultrananocrystalline diamond (UNCD), graphite, and graphene. Pyrolyzing also includes doping the nanostructured carbon material with at least one element selected from the group consisting of nitrogen and boron. Compositions of matter and articles of manufacture are also disclosed.

公开(公告)号：US11738315B2

公开(公告)日：2023-08-29

申请号：US17479553

申请日：2021-09-20

Applicant: US Synthetic Corporation

Inventor： Julie Ann Kidd ,  Heather Marie Schaefer ,  Chengkun Xu ,  Jason K. Wiggins ,  Matthew Brown ,  Cody Frisby

IPC: B01J3/06 ,  E21B10/56 ,  E21B10/567 ,  B24D18/00 ,  C01B32/28

CPC classification number: B01J3/062 ,  B24D18/00 ,  B24D18/0009 ,  B24D18/0027 ,  C01B32/28 ,  E21B10/56 ,  E21B10/567 ,  B01J2203/062

Abstract: In an embodiment, a polycrystalline diamond table includes a plurality of bonded diamond grains and a plurality of interstitial regions defined by the plurality of bonded diamond grains. The polycrystalline diamond table may be at least partially leached such that at least a portion of at least one interstitial constituent has been removed from at least a portion of the plurality of interstitial regions by exposure to a leaching agent. The leaching agent may include a mixture having a ratio of weight % hydrofluoric acid to weight % nitric acid of about 1.0 to about 2.4, and water in a concentration of about 50 weight % to about 85 weight %. Various other materials, articles, and methods are also disclosed.

公开(公告)号：US20230257648A1

公开(公告)日：2023-08-17

申请号：US18005115

申请日：2021-07-14

Applicant: Schlumberger Technology Corporation

Inventor： Yahua Bao ,  J. Daniel Belnap

IPC: C09K11/65 ,  C01B32/28

CPC classification number: C09K11/65 ,  C01B32/28

Abstract: Luminescent diamond is made by subjecting a volume of diamond grains to high-pressure/high-temperature conditions with or without a catalyst or pressure transfer media to cause the grains to undergo plastic deformation to produce nitrogen vacancy defects, increasing the luminescent activity/intensity of the resulting diamond material. The consolidated diamond material may be further treated to further increase luminescent activity/intensity including reducing the consolidated diamond material to diamond particles, heat treatment in vacuum, and/or air heat treatment. The resulting luminescent diamond particles display a level of luminescence intensity greater than that of conventional luminescent nanodiamond, and may be functionalized for use in biological applications.

公开(公告)号：US20230136060A1

公开(公告)日：2023-05-04

申请号：US17962614

申请日：2022-10-10

Applicant: Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.O.C

Inventor： MEI-HUI WANG ,  KUN-LIANG LIN ,  CHUAN-YI CHIEN ,  HUNG-MAN YU

IPC: A61K51/12 ,  C01B32/28 ,  A61K51/04

Abstract: The method is capable of effectively labeling the nanodiamonds with radioactive gallium and can be operated at room temperature, and therefore is convenient to operate and does not require further purification to obtain the nanodiamonds labelled with radioactive gallium with a purity of at least 99%

公开(公告)号：US20220396488A1

公开(公告)日：2022-12-15

申请号：US17300384

申请日：2021-06-10

Applicant: Daniel Hodes

Inventor： Daniel Hodes

IPC: C01B32/26 ,  C01B32/28 ,  C23C16/27 ,  C23C16/452 ,  H05H15/00

Abstract: An apparatus for fabricating diamond by carbon assembly, which comprises:
a) a hydrocarbon radical generator in operable connection with b) a mass flow conduit extending from the hydrocarbon radical generator in a) to an interface and into a primary magnetic accelerator containing one or more electromagnets in operable connection with c) a diamond fabrication reactor comprising a diamond forming deposition substrate. Also disclosed is a method for fabricating diamond by shockwaves using the disclosed apparatus.

公开(公告)号：US20220348470A1

公开(公告)日：2022-11-03

申请号：US17766033

申请日：2020-10-02

Applicant: TOMEI DIAMOND CO., LTD.

Inventor： Hiroshi ISHIZUKA (deceased) ,  Yoshiaki ISHIZUKA

IPC: C01B32/28 ,  B01J3/06 ,  C09K3/14

Abstract: [Technical Problem]To provide diamond grits with enhanced friability, and method for the production comprising in combination internal microcracks within the diamond particle and surface irregularities, with or without a layer of non-diamond carbon covering the particle surface.
[Solution to Problem]
The diamond grits of the invention consist of diamond particles synthesized by a static ultrahigh pressure-high temperature process, comprising both microcracks generated within the particles due to the effect of heating, and surface irregularities formed on the particles by oxidizing etching at elevated temperatures.
The production method comprises providing a starting volume of diamond particles, from a synthesizing process in a static ultrahigh pressure-high temperature process, subjecting said diamond particles to a heating process in intimate contact with an oxidizing etchant at a temperature of 800° C. or higher, generating thus microcracks within the diamond particles and also causing to corrode the particle surface thus forming increased surface irregularities, and recovering the treated diamond particles.

公开(公告)号：US20220324714A1

公开(公告)日：2022-10-13

申请号：US17849373

申请日：2022-06-24

Applicant: US Synthetic Corporation

Inventor： Michael James Gleason

IPC: C01B32/28 ,  E21B10/567 ,  B24D18/00

Abstract: Leaching assemblies for processing superabrasive elements element and methods of processing superabrasive elements include a protective leaching cup and a liner for receiving at least a portion of a superabrasive element. The liner may include a rear wall, a side wall, and a tapered interface extending between the side wall and the rear wall.

公开(公告)号：US20220259048A1

公开(公告)日：2022-08-18

申请号：US17605596

申请日：2020-05-20

Applicant: DAICEL CORPORATION

Inventor： Norihiro KIMOTO ,  Kouichi UMEMOTO ,  Takeru KASHIWAGI

IPC: C01B32/28 ,  C08K3/04 ,  C08K9/06 ,  C08K5/101 ,  C09C3/04 ,  C09C3/08 ,  C09C3/12

Abstract: Provided is a nanodiamond dispersion composition having excellent dispersibility of nanodiamond particles in an organic dispersion medium even when the organic dispersion medium has a small SP value. The nanodiamond dispersion composition according to an embodiment of the present invention includes an organic dispersion medium, nanodiamond particles dispersed in the organic dispersion medium, and a fatty acid ester dispersing agent. The fatty acid ester dispersing agent preferably has a mass loss rate of 20% or less when held in an air atmosphere at a temperature of 200° C. for 180 minutes. The fatty acid ester dispersing agent preferably has an acid value of 40 mgKOH/g or less.

公开(公告)号：US11335779B2

公开(公告)日：2022-05-17

申请号：US16977342

申请日：2019-02-28

Applicant: KYOTO UNIVERSITY

Inventor： Norikazu Mizuochi ,  Hiromitsu Kato ,  Toshiharu Makino ,  Satoshi Yamasaki

IPC: H01L29/16 ,  C01B32/28 ,  C01B32/26 ,  C23C16/27 ,  C30B25/02 ,  C30B29/04 ,  G01R33/26 ,  H01L21/02 ,  H01L29/167 ,  H01L39/12

Abstract: A sensor element including a diamond in which nitrogen-vacancy centers in a diamond crystal structure stabilize in a negative charge state. By ensuring that the diamond of the sensor element is n-type phosphorus-doped and contains nitrogen-vacancy centers in the crystal structure, the probability that nitrogen-vacancy centers in the diamond lattice are in a neutral state decreases, and the nitrogen-vacancy centers stabilize in a negative charge state.

公开(公告)号：US20220089446A1

公开(公告)日：2022-03-24

申请号：US17302597

申请日：2021-05-07

Applicant: ELEMENT SIX (UK) LIMITED

Inventor： MARK GREGORY MUNDAY ,  JACQUELINE HALL

IPC: C01B32/28 ,  C30B29/04 ,  C30B29/60 ,  C30B33/04 ,  C30B29/66

Abstract: A diamond powder comprising diamond particles having an average particle size of no more than 20 μm and a vacancy or impurity-vacancy point defect concentration of at least 1 ppm. At least 70% of the volume of diamond in the powder is formed from a single crystal growth sector. This leads to a substantially uniform concentration of vacancies or impurity-vacancy point defects in the diamond particles because the rate of impurity take-up during growth is heavily dependent on the growth sector, which in turn leads to a more uniform fluorescent response. There is also described a method for making such a powder.