Patents by Inventor Ching-Cheh Hung

Ching-Cheh Hung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10876024
    Abstract: A material that facilitates dissipation of heat is provided and includes hexagonal boron nitride and alumina.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: December 29, 2020
    Assignee: United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Ching-Cheh Hung, Janet B. Hurst
  • Publication number: 20190177592
    Abstract: A material that facilitates dissipation of heat is provided and includes hexagonal boron nitride and alumina.
    Type: Application
    Filed: October 4, 2017
    Publication date: June 13, 2019
    Inventors: Ching-Cheh Hung, Janet B. Hurst
  • Patent number: 10005668
    Abstract: Methods that facilitate exfoliation of hexagonal boron nitride (hBN), exfoliated hBN, and associated intermediate products are disclosed. Such a method can include the acts of mixing a sample of hBN with an activation agent (e.g., NaF, etc.) and a selected set of chemicals (e.g., a metal chloride) and intercalating the set of chemicals into the hBN to obtain intercalated hBN. Additionally, such a method can include the acts of hydrating the set of chemicals (i.e., the intercalates), and converting the set of chemicals to a set of oxide nanoparticles when exfoliating the intercalated hBN. The exfoliated hBN can be washed (e.g., with HCl, etc.) to remove remaining nanoparticles.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: June 26, 2018
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Ching-cheh Hung, Janet B. Hurst
  • Patent number: 10000419
    Abstract: Compositions and methods associated with intercalating and exfoliating a sample are described herein. For example, of a method may include mixing the sample with intercalation materials. The intercalation materials are then intercalated into the sample to obtain a sample intercalated with the intercalation materials. The intercalated sample can then be exfoliated to produce an exfoliated sample.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: June 19, 2018
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Ching-Cheh Hung, Janet B. Hurst, Maricela Lizcano, Diana Santiago
  • Publication number: 20180094182
    Abstract: A material that facilitates dissipation of heat is provided and includes hexagonal boron nitride and alumina.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 5, 2018
    Inventors: Ching-Cheh Hung, Janet B. Hurst
  • Patent number: 8734748
    Abstract: A method of purifying a nanomaterial and the resultant purified nanomaterial in which a salt, such as ferric chloride, at or near its liquid phase temperature, is used to penetrate and wet the internal surfaces of a nanomaterial to dissolve impurities that may be present, for example, from processes used in the manufacture of the nanomaterial.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: May 27, 2014
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Ching-Cheh Hung, Janet Hurst
  • Publication number: 20110204285
    Abstract: A lunar dust simulant containing nanophase iron and a method for making the same. Process (1) comprises a mixture of ferric chloride, fluorinated carbon powder, and glass beads, treating the mixture to produce nanophase iron, wherein the resulting lunar dust simulant contains ?-iron nanoparticles, Fe2O3, and Fe3O4. Process (2) comprises a mixture of a material of mixed-metal oxides that contain iron and carbon black, treating the mixture to produce nanophase iron, wherein the resulting lunar dust simulant contains ?-iron nanoparticles and Fe3O4.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 25, 2011
    Inventors: Ching-cheh Hung, Jeremiah McNatt
  • Patent number: 7094499
    Abstract: A method of forming a composite material for use as an anode for a lithium-ion battery is disclosed. The steps include selecting a carbon material as a constituent part of the composite, chemically treating the selected carbon material to receive nanoparticles, incorporating nanoparticles into the chemically treated carbon material and removing surface nanoparticles from an outside surface of the carbon material with incorporated nanoparticles. A material making up the nanoparticles alloys with lithium.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: August 22, 2006
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Ching-Cheh Hung
  • Patent number: 6103210
    Abstract: A process for providing elemental metals or metal oxides distributed on a carbon substrate or self-supported utilizing graphite oxide as a precursor. The graphite oxide is exposed to one or more metal chlorides to form an intermediary product comprising carbon, metal, chloride, and oxygen. This intermediary product can be fiber processed by direct exposure to carbonate solutions to form a second intermediary product comprising carbon, metal carbonate, and oxygen. Either intermediary product may be further processed: a) in air to produce metal oxide; b) in an inert environment to produce metal oxide on carbon substrate; c) in a reducing environment to produce elemental metal distributed on carbon substrate. The product generally takes the shape of the carbon precursor.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: August 15, 2000
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Ching-Cheh Hung
  • Patent number: 6039930
    Abstract: A process for providing elemental metals or metal oxides distributed on a carbon substrate or self-supported utilizing graphite oxide as a precursor. The graphite oxide is exposed to one or more metal chlorides to form an intermediary product comprising carbon, metal, chloride, and oxygen This intermediary product can be flier processed by direct exposure to carbonate solutions to form a second intermediary product comprising carbon, metal carbonate, and oxygen. Either intermediary product may be further processed: a) in air to produce metal oxide; b) in an inert environment to produce metal oxide on carbon substrate; c) in a reducing environment to produce elemental metal distributed on carbon substrate. The product generally takes the shape of the carbon precursor.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: March 21, 2000
    Assignee: The United States of America as represented by Administration of the National Aeronautics and Space Administration
    Inventor: Ching-Cheh Hung
  • Patent number: 6036934
    Abstract: A method of making chemically modified carbon-based materials for engineering purposes from a precursor containing graphite fluoride by using halocarbons or elemental sulfur as chemical agents that diffuse into the lamellar crystal structure of the graphite fluoride and permit defluoridation at a controlled rate upon heating, to produce graphite fluoride-free intermediate carbon material and, upon further heating to form a chemically modified non-graphitized carbon.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: March 14, 2000
    Inventor: Ching-Cheh Hung
  • Patent number: 5965055
    Abstract: A plurality of processes for producing unique end products containing elemental metals or metal oxides on and in a carbon substrate, elemental metals or metal oxides in the absence of such a carbon substrate, mixtures of elemental metals or metal oxides on and in a carbon substrate, or mixtures of elemental metals or metal oxides in the absence of such a carbon substrate, all of which processes involve the preparation of a first-step intermediate product that is a carbonaceous material appearing to be non-graphitic by X-ray diffraction standards and containing metal and halogen, which intermediate product is made from graphite fluoride and an appropriate metal halide. Among the end products are aluminum oxide fibers, elemental iron fibers, magnetic carbon fibers containing either iron or an iron-nickel alloy, and carbon containing various metals in the form of elemental metal or oxides.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: October 12, 1999
    Inventor: Ching-Cheh Hung
  • Patent number: 5876687
    Abstract: A process for providing elemental metals or metal oxides distributed on a carbon substrate or self-supported utilizing graphite oxide as a precursor. The graphite oxide is exposed to one or more metal chlorides to form an intermediary product comprising carbon, metal, chloride, and oxygen. This intermediary product can be further processed by direct exposure to carbonate solutions to form a second intermediary product comprising carbon, metal carbonate, and oxygen. Either intermediary product may be further processed: a) in air to produce metal oxide; b) in an inert environment to produce metal oxide on carbon substrate; c) in a reducing environment to produce elemental metal distributed on carbon substrate. The product generally takes the shape of the carbon precursor.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: March 2, 1999
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Ching-Cheh Hung
  • Patent number: 5851417
    Abstract: A plurality of processes for producing unique end products containing elemental metals or metal oxides on and in a carbon substrate, elemental metals or metal oxides in the absence of such a carbon substrate, mixtures of elemental metals or metal oxides on and in a carbon substrate, or mixtures of elemental metals or metal oxides in the absence of such a carbon substrate, all of which processes involve the preparation of a first-step intermediate product that is a carbonaceous material appearing to be non-graphitic by X-ray diffraction standards and containing metal and halogen, which intermediate product is made from graphite fluoride and an appropriate metal halide. Among the end products are aluminum oxide fibers, elemental iron fibers, magnetic carbon fibers containing either iron or an iron-nickel alloy, and carbon containing various metals in the form of elemental metal or oxides.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: December 22, 1998
    Inventor: Ching-Cheh Hung
  • Patent number: 5843528
    Abstract: A method of making chemically modified carbon-based composite materials for engineering purposes from a precursor containing graphite fluoride by using halocarbons or elemental sulfur as chemical agents that diffuse into the lamellar crystal structure of the graphite fluoride and permit defluoridation at a controlled rate upon heating, to produce a graphite fluoride-free intermediate carbon material and, upon further heating to form a chemically modified carbon that is further heated in the presence of a specified one of several chemical elements to form a composite including a coating of the specified element.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: December 1, 1998
    Inventor: Ching-Cheh Hung
  • Patent number: 5622683
    Abstract: A method of making chemically modified carbon-based materials for engineering purposes from a precursor containing graphite fluoride by using halocarbons or elemental sulfur as chemical agents that diffuse into the lamellar crystal structure of the graphite fluoride and permit defluoridation at a controlled rate upon heating, to produce fluoride-free intermediate carbon material and, upon further heating to form a graphitized, chemically modified carbon.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: April 22, 1997
    Inventor: Ching-Cheh Hung
  • Patent number: 5286471
    Abstract: Graphite fluoride is produced from graphitized carbon. A bromine iodine mixture reacts with graphitized carbon to produce iodine intercalated graphitized carbon that is then exposed to fluorine.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: February 15, 1994
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Ching-Cheh Hung
  • Patent number: 5059409
    Abstract: Low cost, high break elongation graphitized carbon fibers having low degree of graphitization are inert to bromine at room or higher temperatures, but are brominated at -7.degree. to 20.degree. C., and then debrominated at ambient. Repetition of this bromination-debromination process can bring the bromine content to 18%. Electrical conductivity of the brominated fibers is three times of the before-bromination value.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: October 22, 1991
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Ching-Cheh Hung
  • Patent number: 4957661
    Abstract: Improved graphite fluoride fibers are produced by contact reaction between highly graphitized fibers and fluorine gas. It is preferable to intercalate the fibers with bromine or fluorine and metal fluoride prior to fluorination.These graphite fluoride fibers are bound by an epoxy. The resulting composites have high thermal conductivity, high electric resistivity, and high emissivity.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: September 18, 1990
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventor: Ching-Cheh Hung