Patents by Inventor Hiroki Ago

Hiroki Ago 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: 11352692
    Abstract: The present invention is to provide: a method for producing a novel hexagonal boron nitride thin film suitable for industrial use such as application to electronics, in which a hexagonal boron nitride thin film having a large area, a uniform thickness of 1 nm or more, with few grain boundaries can be produced inexpensively; and a hexagonal boron nitride thin film. The hexagonal boron nitride thin film according to the present invention is characterized by having a thickness of 1 nm or more, and an average value of the full width at half maximum of the E2g peak obtained from Raman spectrum of 9 to 20 cm?1.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: June 7, 2022
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hiroki Ago, Kenji Kawahara, Yuki Uchida, Sho Nakandakari, Daichi Tanaka
  • Publication number: 20220169002
    Abstract: The present invention relates to a laminate including a two-dimensional material and an adhesive sheet having a base material and an adhesive layer whose adhesive force decreases due to ultraviolet rays or heat, in which an adhesive force A at 25° C. of the adhesive layer before the ultraviolet rays or heat applies, to a silicon wafer is 1.0 N/20 mm to 20.0 N/20 mm when the adhesive layer is subjected to 180° peeling at a tensile speed of 300 mm/min, and a surface roughness of an adhesive surface of the adhesive layer after the ultraviolet rays or heat has been applied is 0.01 ?m to 8.00 ?m.
    Type: Application
    Filed: February 14, 2020
    Publication date: June 2, 2022
    Inventors: Satoshi HONDA, Naofumi KOSAKA, Shotaro MASUDA, Atsushi YASUI, Hiroki AGO, Kenji KAWAHARA, Shun OYAMA
  • Publication number: 20190345603
    Abstract: The present invention is to provide: a method for producing a novel hexagonal boron nitride thin film suitable for industrial use such as application to electronics, in which a hexagonal boron nitride thin film having a large area, a uniform thickness of 1 nm or more, with few grain boundaries can be produced inexpensively; and a hexagonal boron nitride thin film. The hexagonal boron nitride thin film according to the present invention is characterized by having a thickness of 1 nm or more, and an average value of the full width at half maximum of the E2g peak obtained from Raman spectrum of 9 to 20 cm?1.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 14, 2019
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hiroki AGO, Kenji KAWAHARA, Yuki UCHIDA, Sho NAKANDAKARI, Daichi TANAKA
  • Patent number: 8697230
    Abstract: To provide a graphene sheet that has a large area, is homogeneous, and has a small amount of domain boundaries, a novel method for producing a graphene sheet suitable for industrial applications, such as application to electronics, that is capable of producing a graphene sheet that has well aligned crystal orientation at a low cost, and a graphene sheet. In the method for producing a graphene sheet of the present invention, a substrate containing a single crystal substrate having formed on the surface thereof an epitaxial metal film is used, and a graphene sheet is grown by making a carbon material into contact with the surface of the epitaxial metal film. In the graphene sheet of the present invention, the graphene sheet is constituted by a number of graphene domains, the domains each have an area of from 0.000001 ?m2 to 100,000 mm2, and the orientations of 6-membered rings in the domains are averagely aligned in a single direction over the graphene sheet.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: April 15, 2014
    Assignee: Kyushu University
    Inventors: Hiroki Ago, Yoshito Ito, Izumi Tanaka, Seigi Mizuno, Masaharu Tsuji
  • Publication number: 20120196074
    Abstract: To provide a graphene sheet that has a large area, is homogeneous, and has a small amount of domain boundaries, a novel method for producing a graphene sheet suitable for industrial applications, such as application to electronics, that is capable of producing a graphene sheet that has well aligned crystal orientation at a low cost, and a graphene sheet. In the method for producing a graphene sheet of the present invention, a substrate containing a single crystal substrate having formed on the surface thereof an epitaxial metal film is used, and a graphene sheet is grown by making a carbon material into contact with the surface of the epitaxial metal film. In the graphene sheet of the present invention, the graphene sheet is constituted by a number of graphene domains, the domains each have an area of from 0.000001 ?m2 to 100,000 mm2, and the orientations of 6-membered rings in the domains are averagely aligned in a single direction over the graphene sheet.
    Type: Application
    Filed: August 31, 2010
    Publication date: August 2, 2012
    Applicant: KYUSHU UNIVERSITY
    Inventors: Hiroki Ago, Yoshito Ito, Izumi Tanaka, Seigi Mizuno, Masaharu Tsuji
  • Publication number: 20030096104
    Abstract: A complex molded body of carbon nanotubes includes a matrix and carbon nanotubes arranged in a given direction in the matrix. The matrix is at least one organic polymer selected from the group consisting of thermoplastic resin, thermosetting resin, rubber, and thermoplastic elastomer. The complex molded body is produced by a method comprising the step of: providing a composition that includes a matrix and carbon nanotubes; applying a magnetic field to the composition to arrange the carbon nanotubes in a given direction; and hardening the composition to produce a complex molded body. The complex molded body has excellent anisotropy in terms of electrical property, thermal property, and mechanical property.
    Type: Application
    Filed: March 14, 2002
    Publication date: May 22, 2003
    Applicant: Polymatech Co., Ltd.
    Inventors: Masayuki Tobita, Toru Kimura, Motoo Yumura, Satoshi Ohshima, Hiroki Ago, Kunio Uchida, Yozo Kakudate, Hiroyuki Yokoi