Patents by Inventor Kunihiko Eguchi

Kunihiko Eguchi 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: 11942641
    Abstract: Resin-adhered graphite particles are obtained by causing a modified novolac-type phenolic resin to adhere to graphite particles. At least part of surfaces of the graphite particles is coated with a carbonaceous coating by heating the resin-adhered graphite particles in a non-oxidizing atmosphere at 900 to 1,500° C. to carbonize the modified novolac-type phenolic resin. Arylene groups having hydroxy groups account for 5 to 95 mol % of arylene groups constituting the modified novolac-type phenolic resin. The obtained carbonaceous substance-coated graphite particles exhibit excellent battery properties when used as a negative electrode material for a lithium ion secondary battery.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: March 26, 2024
    Assignees: JFE Chemical Corporation, Sumitomo Bakelite Co., Ltd.
    Inventors: Ryuta Haga, Motoharu Obika, Kunihiko Eguchi, Yoshikazu Kobayashi, Masakatsu Asami
  • Publication number: 20230107067
    Abstract: Resin-adhered graphite particles are obtained by causing a modified novolac-type phenolic resin to adhere to graphite particles. At least part of surfaces of the graphite particles is coated with a carbonaceous coating by heating the resin-adhered graphite particles in a non-oxidizing atmosphere at 900 to 1,500° C. to carbonize the modified novolac-type phenolic resin. Arylene groups having hydroxy groups account for 5 to 95 mol % of arylene groups constituting the modified novolac-type phenolic resin. The obtained carbonaceous substance-coated graphite particles exhibit excellent battery properties when used as a negative electrode material for a lithium ion secondary battery.
    Type: Application
    Filed: November 9, 2020
    Publication date: April 6, 2023
    Applicants: JFE CHEMICAL CORPORATION, SUMITOMO BAKELITE CO., LTD.
    Inventors: Ryuta Haga, Motoharu Obika, Kunihiko Eguchi, Yoshikazu Kobayashi, Masakatsu Asami
  • Publication number: 20210408521
    Abstract: Resin-adhered graphite particles are obtained by causing a modified novolac-type phenolic resin to adhere to graphite particles. At least part of surfaces of the graphite particles is coated with a carbonaceous coating by heating the resin-adhered graphite particles in a non-oxidizing atmosphere at 900 to 1,500° C. to carbonize the modified novolac-type phenolic resin. Arylene groups having hydroxy groups account for 5 to 95 mol % of arylene groups constituting the modified novolac-type phenolic resin. The obtained carbonaceous substance-coated graphite particles exhibit excellent battery properties when used as a negative electrode material for a lithium ion secondary battery.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 30, 2021
    Applicants: JFE CHEMICAL CORPORATION, SUMITOMO BAKELITE CO., LTD.
    Inventors: Ryuta Haga, Motoharu Obika, Kunihiko Eguchi, Yoshikazu Kobayashi, Masakatsu Asami
  • Publication number: 20190207219
    Abstract: A negative electrode active mass, a negative electrode, and a rechargeable battery, the active mass including a water-soluble polymer binder; a polymer particle binder; and a negative active material, wherein the water-soluble polymer binder, the polymer particle binder, and the negative active material are included in an amount of about 0.5-2.5:0.5-2.5:95-99, the water-soluble polymer binder includes a copolymer of a carboxyl group-containing acrylic monomer and a water-soluble acrylic acid monomer, repeating units of the water-soluble acrylic acid monomer are included in the copolymer in an amount of about 10 wt % to about 40 wt %, a shear viscosity at 25° C. of an aqueous solution including 1.0 wt % of the copolymer is about 1.0 (Pa·s) to 25 (Pa·s) at a shear rate of 1.0 (1/s), and the negative active material includes graphite particles having a hexagonal interplanar spacing d002 measured by XRD of about 0.3354 nm to 0.3362 nm.
    Type: Application
    Filed: December 21, 2018
    Publication date: July 4, 2019
    Inventors: Kunihiko EGUCHI, Iwao FUKUCHI, Isao KOIZUMI, Kenichi KAWASE
  • Publication number: 20020037451
    Abstract: Carbon substrate carrying an organic polymer containing aliphatic amino groups on its side chain, for a lithium ion rechargeable battery, the carbon substrate showing a high initial charge-discharge efficiency and discharge capacitance.
    Type: Application
    Filed: July 27, 2001
    Publication date: March 28, 2002
    Applicant: Kawasaki Steel Corporation
    Inventors: Kunihiko Eguchi, Katsuhiro Nagayama, Hitomi Hatano, Makiko Ijiri, Toshihide Suzuki
  • Patent number: 6180701
    Abstract: There are provided a resin composition having excellent wear properties and high flame retardancy, and a resin molding that results from melt molding of such composition. The resin composition is essentially comprised of: (A) a polycarbonate resin; (B) a modified polyolefin resin; (C) a compound represented by HOOC—R—NH2 where R is an alkylene, alkylidene, oligomethylene, phenylene or naphthylene group having 5 or more carbon atoms, respectively, wherein each of the phenylene and naphthylene groups may have substituent group; and (D) a specific phosphate ester.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: January 30, 2001
    Assignee: Kawasaki Steel Corporation
    Inventors: Kazuya Takemura, Kunihiko Eguchi, Masato Takagi, Taichi Ogawa
  • Patent number: 5529808
    Abstract: A glass fiber reinforced polymer which excels in mechanical properties and is suitable for use in a large-sized structural members, formed from a dispersion liquid by dispersing reinforcement glass fibers and particulate thermoplastic resin in a surfactant-containing aqueous medium in which bubbles of air are dispersed, forming a sheet-like web on a porous support plate, and applying heat and pressure to form a sheet. The reinforcement glass fibers include a silane coupling agent while the matrix resin has functional groups bonded to the silane coupling agent. The concentration of said functional groups is higher in the regions adjacent the surfaces of said reinforcement glass fibers than in regions farther removed therefrom, and said concentration progressively decreases in the direction away from said reinforcement glass fibers.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: June 25, 1996
    Assignee: Kawasaki Steel Corporation
    Inventors: Kunihiko Eguchi, Masafumi Komatsu, Seiji Hanatani, Yuichi Uchida, Tomoshige Ono, Tadahiro Wakui