Patents by Inventor Hiroyuki Tetsuka

Hiroyuki Tetsuka 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: 11453649
    Abstract: A graphene nanostructure has a nanographene, a ? conjugated functional group bonded to the nanographene via a pyrazine skeleton, and at least one Br group and/or at least one CN group introduced into the ? conjugated functional group. A graphene nanostructure preferably has an average size of 1 nm or larger to 100 nm or smaller, a band gap of 0.01 eV or higher to 1.2 eV or lower, and/or a HOMO level of ?6.0 eV or higher to ?4.0 eV or lower. As the ? conjugated functional group into which the Br group(s) and/or the CN group(s) are/is introduced, a 4-bromobenzene group, a 4,5-dibromobenzene group, a 5-bromopyridine group, a 5-bromopyrazine group, a benzonitrile group, a phthalonitrile group, or a 2,3-dicyanopyrazine group is desirable.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: September 27, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Hiroyuki Tetsuka
  • Patent number: 11408910
    Abstract: An accelerator position detection device includes a handlebar grip that is turnable in a normal rotation direction and in a reverse rotation direction from a neutral position and is energized to the neutral position when no operation is applied; accelerator position sensors that output voltage according to an angle of the handlebar grip and that include a first sensor and a second sensor; and a detector that detects an angle for control for controlling a vehicle on the basis of the angle of the handlebar grip according to output from the accelerator position sensors. The detector detects an angle as a positive value on the basis of a first voltage when the first voltage in a rising range is output, and the detector detects an angle as a negative value on the basis of a second voltage when a first initial value not located in the rising range is output.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: August 9, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroyuki Akiyoshi, Yutaka Sonoda, Takashi Tetsuka, Yutaka Kikuchi, Takuya Osanai, Shinji Misawa, Kazuhiko Ono
  • Publication number: 20210061774
    Abstract: A graphene nanostructure has a nanographene, a ? conjugated functional group bonded to the nanographene via a pyrazine skeleton, and at least one Br group and/or at least one CN group introduced into the ? conjugated functional group. A graphene nanostructure preferably has an average size of 1 nm or larger to 100 nm or smaller, a band gap of 0.01 eV or higher to 1.2 eV or lower, and/or a HOMO level of ?6.0 eV or higher to ?4.0 eV or lower. As the ? conjugated functional group into which the Br group(s) and/or the CN group(s) are/is introduced, a 4-bromobenzene group, a 4,5-dibromobenzene group, a 5-bromopyridine group, a 5-bromopyrazine group, a benzonitrile group, a phthalonitrile group, or a 2,3-dicyanopyrazine group is desirable.
    Type: Application
    Filed: July 17, 2018
    Publication date: March 4, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Hiroyuki TETSUKA
  • Patent number: 9090826
    Abstract: A light emitting body has a base material containing a graphene structure and a covering material for covering a surface of the base material. The graphene structure preferably includes a sheet portion made of a monolayer or multilayer graphene nanosheet and having, at an edge portion thereof, an armchair edge-face portion; and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith. Further, the graphene structure preferably includes a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion (including carbon atom on the side shared with the terminal six-membered ring).
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: July 28, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Hiroyuki Tetsuka
  • Patent number: 8999529
    Abstract: A nitrogen-containing graphene structure has a graphene structure including a monolayer or multilayer graphene nanosheet and nitrogen introduced into the graphene structure. The nitrogen-containing graphene structure preferably includes the above-described graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet and containing, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith; and a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) the carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) the carbon atoms constituting the sheet portion (including the carbon atom on the side shared by the terminal six-membered ring). A phosphor dispersion is a dispersion of such a nitrogen-containing graphene structure in a solvent.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: April 7, 2015
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Hiroyuki Tetsuka, Kazuo Okamoto
  • Publication number: 20130181165
    Abstract: A nitrogen-containing graphene structure has a graphene structure including a monolayer or multilayer graphene nanosheet and nitrogen introduced into the graphene structure. The nitrogen-containing graphene structure preferably includes the above-described graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet and containing, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith; and a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) the carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) the carbon atoms constituting the sheet portion (including the carbon atom on the side shared by the terminal six-membered ring). A phosphor dispersion is a dispersion of such a nitrogen-containing graphene structure in a solvent.
    Type: Application
    Filed: August 24, 2011
    Publication date: July 18, 2013
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hiroyuki Tetsuka, Kazuo Okamoto
  • Publication number: 20130181166
    Abstract: A light emitting body has a base material containing a graphene structure and a covering material for covering a surface of the base material. The graphene structure preferably includes a sheet portion made of a monolayer or multilayer graphene nanosheet and having, at an edge portion thereof, an armchair edge-face portion; and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith. Further, the graphene structure preferably includes a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion (including carbon atom on the side shared with the terminal six-membered ring).
    Type: Application
    Filed: August 24, 2011
    Publication date: July 18, 2013
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Hiroyuki Tetsuka
  • Patent number: 8288022
    Abstract: A perovskite phosphor film emitting red light from among the three primary colors (i.e., red, green and blue) underlying the construction of displays which is fabricated by adsorbing a nanosheet as a seed layer on a solid substrate and forming an oriented film of an oxide phosphor thereon, characterized in that the perovskite phosphor film comprises a film of an oxide phosphor (3) having a high transparency that is formed on a seed layer comprising a nanosheet (2) that is adsorbed on a solid substrate (1) such as a glass substrate or the like, and the oxide phosphor (3) is (SrxCa1-x)1-yPryTiO3: 0?x?0.8, 0.001?y?0.01.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: October 16, 2012
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Keiichi Ikegami, Hiroshi Takashima, Takeo Ebina, Hiroyuki Tetsuka
  • Publication number: 20110143144
    Abstract: A perovskite phosphor film emitting red light from among the three primary colors (i.e., red, green and blue) underlying the construction of displays which is fabricated by adsorbing a nanosheet as a seed layer on a solid substrate and forming an oriented film of an oxide phosphor thereon, characterized in that the perovskite phosphor film comprises a film of an oxide phosphor (3) having a high transparency that is formed on a seed layer comprising a nanosheet (2) that is adsorbed on a solid substrate (1) such as a glass substrate or the like, and the oxide phosphor (3) is (SrxCa1-x)1-y,PryTiO3: 0?x?0.8, 0.001?y?0.01.
    Type: Application
    Filed: July 17, 2009
    Publication date: June 16, 2011
    Applicant: NATIONAL INSTUTITUE OF ADVANCED INDUSTRIAL SCEINCE AND TECHNOLOGY
    Inventors: Keiichi Ikegami, Hiroshi Takashima, Takeo Ebina, Hiroyuki Tetsuka
  • Patent number: 6763451
    Abstract: In a multiprocessor exchange having a floating function, a signal distribution control processor is provided between a plurality of call control processors and a plurality of line controllers, and lines or highways are allocated to the call control processors on the basis of the line allocation information which is input from a terminal apparatus. The signal distribution control processor distributes the call control information on a predetermined line which is input from a line controller to the call control processor corresponding to the line by reference to the line allocation information, and distributes the call control information input from a call control processor to the corresponding line controller.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: July 13, 2004
    Assignee: Fujitsu Limited
    Inventors: Nobuo Takahashi, Kei Shibuya, Akira Chiba, Hiroyuki Tetsuka, Satoshi Kawano, Kazuhiro Watanabe, Tsuyoshi Kawakita