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).
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Patent number: 11453649Abstract: 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: GrantFiled: July 17, 2018Date of Patent: September 27, 2022Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Hiroyuki Tetsuka
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Publication number: 20210061774Abstract: 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: ApplicationFiled: July 17, 2018Publication date: March 4, 2021Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Hiroyuki TETSUKA
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Patent number: 9090826Abstract: 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: GrantFiled: August 24, 2011Date of Patent: July 28, 2015Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Hiroyuki Tetsuka
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Patent number: 8999529Abstract: 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: GrantFiled: August 24, 2011Date of Patent: April 7, 2015Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hiroyuki Tetsuka, Kazuo Okamoto
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Publication number: 20130181165Abstract: 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: ApplicationFiled: August 24, 2011Publication date: July 18, 2013Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Hiroyuki Tetsuka, Kazuo Okamoto
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Publication number: 20130181166Abstract: 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: ApplicationFiled: August 24, 2011Publication date: July 18, 2013Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Hiroyuki Tetsuka
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Patent number: 8288022Abstract: 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: GrantFiled: July 17, 2009Date of Patent: October 16, 2012Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Keiichi Ikegami, Hiroshi Takashima, Takeo Ebina, Hiroyuki Tetsuka
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Publication number: 20110143144Abstract: 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: ApplicationFiled: July 17, 2009Publication date: June 16, 2011Applicant: NATIONAL INSTUTITUE OF ADVANCED INDUSTRIAL SCEINCE AND TECHNOLOGYInventors: Keiichi Ikegami, Hiroshi Takashima, Takeo Ebina, Hiroyuki Tetsuka
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Patent number: 6763451Abstract: 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: GrantFiled: September 19, 2000Date of Patent: July 13, 2004Assignee: Fujitsu LimitedInventors: Nobuo Takahashi, Kei Shibuya, Akira Chiba, Hiroyuki Tetsuka, Satoshi Kawano, Kazuhiro Watanabe, Tsuyoshi Kawakita