Patents by Inventor Hiroaki Hatori

Hiroaki Hatori 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).

  • Publication number: 20200056305
    Abstract: The present application provides methods for producing polybenzimidazole carbon fiber that does not require infusibilization treatment.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 20, 2020
    Inventors: Toshihira IRISAWA, Hiroaki HATORI, Yasushi SONEDA, Masaya KODAMA
  • Publication number: 20170327973
    Abstract: [Problem] To provide: a carbon fiber precursor fiber that can efficiently produce a carbon fiber at a low cost which is excellent in mechanical strengths even without an infusibilization treatment; a carbon fiber; and a method for producing the carbon fiber. [Solution] A carbon fiber precursor fiber of the present invention includes a polymer containing a constituent unit represented by General Formula (1) below: where in the General Formula (1), X and Y each independently represent a divalent substituent, a single bond, or a structure forming a fused ring by sharing one side of two adjacent rings, and the divalent substituent is selected from the group consisting of —O—, —S—, —OSO—, —NH—, —CO—, —CH2—, and —CH(CH3)2—.
    Type: Application
    Filed: November 27, 2015
    Publication date: November 16, 2017
    Inventors: Hiroaki Hatori, Naoko Tomita, Masaya Kodama
  • Patent number: 9777408
    Abstract: To provide a carbon fiber precursor fiber that can efficiently produce a carbon fiber excellent in mechanical strength without an infusibilization treatment; a carbon fiber; and a method for producing the carbon fiber.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: October 3, 2017
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Toshihira Irisawa, Hiroaki Hatori, Yasushi Soneda, Masaya Kodama
  • Publication number: 20170152612
    Abstract: The present application provides polybenzimidazole carbon fiber that does not require infusibilization treatment and method for producing same.
    Type: Application
    Filed: April 24, 2015
    Publication date: June 1, 2017
    Inventors: Toshihira IRISAWA, Hiroaki HATORI, Yasushi SONEDA, Masaya KODAMA
  • Publication number: 20150322593
    Abstract: To provide a carbon fiber precursor fiber that can efficiently produce a carbon fiber excellent in mechanical strength without an infusibilization treatment; a carbon fiber; and a method for producing the carbon fiber.
    Type: Application
    Filed: November 25, 2013
    Publication date: November 12, 2015
    Inventors: Toshihira IRISAWA, Hiroaki HATORI, Yasushi SONEDA, Masaya KODAMA
  • Patent number: 9000449
    Abstract: A semiconductor substrate that includes a semiconductor layer that exhibits high crystallinity includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine, and a semiconductor layer that is grown on the surface of the graphite layer, or includes a substrate that includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine on its surface, a buffer layer that is grown on the surface of the graphite layer, and a semiconductor layer that is grown on the surface of the buffer layer.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: April 7, 2015
    Assignees: The University of Tokyo, Tokai Carbon Co., Ltd., National Institute of Advanced Industrial Science and Technology
    Inventors: Hiroshi Fujioka, Tetsuro Hirasaki, Hitoshi Ue, Junya Yamashita, Hiroaki Hatori
  • Publication number: 20140377663
    Abstract: The present invention relates to a sheet composite of a metal compound and a fibrous carbon that can yield an electrode or an electrochemical element which achieves output property and high energy density, as well as a manufacturing method thereof. Sheer stress and centrifugal force are applied to a solution comprising a starting material metal compound and a fibrous carbon and reacted in a rotating reaction container to produce a composite material of metal compound and fibrous carbon. The composite material and a binder which is a fibrous carbon are stirred to produce a mixed solvent. The mixed solvent is subjected to suction filtration and vacuum drying. This mixed solution is molded in a paper machine to prepare a sheet composite. The fibrous carbon is carbon nanotubes having a specific surface area of 600 to 2600 m2/g.
    Type: Application
    Filed: October 29, 2012
    Publication date: December 25, 2014
    Inventors: Shunzo Suematsu, Daisuke Horii, Kenji Tamamitsu, Katsuhiko Naoi, Wako Naoi, Hiroaki Hatori, Kenji Hata, Morio Yumura
  • Publication number: 20120187422
    Abstract: A semiconductor substrate that includes a semiconductor layer that exhibits high crystallinity includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine, and a semiconductor layer that is grown on the surface of the graphite layer, or includes a substrate that includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine on its surface, a buffer layer that is grown on the surface of the graphite layer, and a semiconductor layer that is grown on the surface of the buffer layer.
    Type: Application
    Filed: September 7, 2010
    Publication date: July 26, 2012
    Applicants: TOKAI CARBON CO., LTD., THE UNIVERSITY OF TOKYO
    Inventors: Hiroshi Fujioka, Tetsuro Hirasaki, Hitoshi Ue, Junya Yamashita, Hiroaki Hatori
  • Patent number: 8072733
    Abstract: An electrochemical capacitor comprising a nonaqueous electrolyte and a pair of polarizable electrodes, wherein carbon nanotubes are used as an electrode material for at least one of the positive electrode and the negative electrode, the carbon nanotubes have a specific surface area of at least 700 m2/g and contain semiconductive carbon nanotubes, and the electrode material exhibits a voltage dependency of differential capacity by electrochemical doping. The electrochemical capacitor solves the problems associated with activated carbon electrodes and, exploiting the excellent characteristics of carbon nanotubes, has increased capacitance and increased energy density, therefore realizing a reduced internal resistance and a prolonged service life.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: December 6, 2011
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Hiroaki Hatori, Osamu Tanaike, Kenji Hata
  • Publication number: 20090122469
    Abstract: The electrochemical capacitor of the invention comprises a nonaqueous electrolyte and a pair of polarizable electrodes, wherein carbon nanotubes are used as an electrode material for at least one of the positive electrode and the negative electrode, the carbon nanotubes have a specific surface area of at least 700 m2/g and contain semiconductive carbon nanotubes, and the electrode material exhibits a voltage dependency of differential capacity by electrochemical doping. The electrochemical capacitor solves the problems with activated carbon electrodes and, exploiting the excellent characteristics of carbon nanotubes, has further increased capacitance and increased energy density, therefore realizing a reduced internal resistance and a prolonged service life.
    Type: Application
    Filed: August 17, 2006
    Publication date: May 14, 2009
    Inventors: Hiroaki Hatori, Osamu Tanaike, Kenji Hata
  • Patent number: 5383277
    Abstract: In order to reduce an impact noise which is made when a pen lifting rail (5) is swung up into contact with a pen support arm (4) in a writing apparatus wherein the arm is swung up and down by swinging the rail up and down, in the present invention, immediately before the pen lifting rail (5) being swung up by de-energizing a solenoid, which is energized to swing down the rail, comes into contact with the bottom of the pen support arm (4), the solenoid is instantaneously energized to slow down the upward swinging of the rail to reduce the impact noise.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: January 24, 1995
    Assignee: Max Co., Ltd.
    Inventors: Mitsugi Shimoda, Hiroaki Hatori, Yoshinori Takubo, Takashi Masuda, Hirokazu Takada