Patents by Inventor Masaaki Kitano
Masaaki Kitano 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: 11976748Abstract: A diaphragm valve includes a body (3) having a flow path (2), a seat (4) formed in the flow path (2), a metal diaphragm (5) for opening and closing the flow path (2), a pair of clamping parts (6) and (7) for claiming peripheral edge portions of the metal diaphragm (5) to fix the metal diaphragm (5) to the body (3), and an actuator (8) for abutting the metal diaphragm (5) to the seat (4) or separating the metal diaphragm from the seat (4), wherein a fluorine resin coating is formed on a seat side surface (5a) of the metal diaphragm (5) at least in a contact region (B-A) with the seat (4) in a region (C) surrounded by a clamping region (D-C) between the seat side surface (5a) and one of the pair of clamping portions (6, 7), excluding the clamping region (D-C).Type: GrantFiled: June 12, 2020Date of Patent: May 7, 2024Assignee: FUJIKIN INCORPORATEDInventors: Kaoru Hirata, Masaaki Nagase, Atsushi Hidaka, Kazuyuki Morisaki, Keisuke Ideguchi, Kosuke Sugimoto, Masafumi Kitano, Kouji Nishino, Nobukazu Ikeda
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Patent number: 11964260Abstract: Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO·7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO·7Al2O3; and a third step for performing a reduction process on the 12CaO·7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.Type: GrantFiled: October 1, 2020Date of Patent: April 23, 2024Assignees: Tokyo Institute of Technology, Tsubame BHB Co., Ltd.Inventors: Hideo Hosono, Masaaki Kitano, Toshiharu Yokoyama, Jiang Li, Shigeki Kawamura, Kazuhisa Kishida
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Patent number: 11819827Abstract: Provided are a supported metal material showing high catalytic activity, a supported metal catalyst, a method of producing ammonia and a method of producing hydrogen using the supported metal catalyst, and a method of producing a cyanamide compound. The supported metal material of the present invention is a supported metal material in which a transition metal is supported on a support, and the support is a cyanamide compound represented by the following general formula (1): MCN2 (1), wherein M represents a group II element of the periodic table, and the specific surface area of the cyanamide compound is 1 m2 g?1 or more.Type: GrantFiled: March 16, 2018Date of Patent: November 21, 2023Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGYInventors: Hideo Hosono, Kazuhisa Kishida, Masaaki Kitano, Toshiharu Yokoyama
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Publication number: 20230241593Abstract: The present invention is related to an oxynitride-hydride which is capable of achieving both stabilization and improvement of catalyst performance when used as a support, and the oxynitride-hydride can be easily synthesized. The oxynitride-hydride is represented by the following general formula (1), AnBmOl-xNyHz??(1) wherein in the general formula (1), x represents a number represented by 0.1?x?3.5; y represents a number represented by 0.1?y?2.0; and z represents a number represented by 0.1?z?2.0.Type: ApplicationFiled: February 16, 2021Publication date: August 3, 2023Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Masaaki KITANO, Hideo HOSONO, Toshiharu YOKOYAMA, Jun KUJIRAI, Kiya OGASAWARA
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Publication number: 20230083938Abstract: The invention is related to a layered double hydroxide electride which can be produced without high-temperature treatment, and a production method of which cost can be reduced. The layered double hydroxide electride contains electrons between layers and has an electron density of 2.0×1018 cm?3 or more. The method of producing the layered double hydroxide electride includes a step of mixing a starting layered double hydroxide with an electron exchanger for exchanging anions existing between layers of the starting layered double hydroxide for electrons to produce the layered double hydroxide electride.Type: ApplicationFiled: February 15, 2021Publication date: March 16, 2023Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Masaaki KITANO, Hideo HOSONO, Toshiharu YOKOYAMA, Kiya OGASAWARA, Yo AGAWA
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Intermetallic compound, hydrogen storage/release material, catalyst and method for producing ammonia
Patent number: 11433378Abstract: Provided are an intermetallic compound having high stability and high activity, and a catalyst using the same. A hydrogen storage/release material containing an intermetallic compound represented by formula (1): RTX . . . (1) wherein R represents a lanthanoid element, T represents a transition metal in period 4 or period 5 in the periodic table, and X represents Si, Al or Ge.Type: GrantFiled: July 12, 2018Date of Patent: September 6, 2022Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGYInventors: Hideo Hosono, Yutong Gong, Jiazhen Wu, Masaaki Kitano, Toshiharu Yokoyama, Yangfan Lu, Tiannan Ye -
Publication number: 20220241754Abstract: The invention provides a method of producing a metal oxyhydride, capable of synthesizing the metal oxyhydride under reaction conditions close to atmospheric pressure, and excellent in productivity and cost. The method of producing a metal oxyhydride of the present invention includes reacting an oxide with a metal hydride in a hydrogen atmosphere. A non-oxygen element constituting the oxide comprises only one kind of non-oxygen element. A pressure condition of the reaction is 0.1 to 0.9 MPa, and a temperature of the reaction is 500 to 1000° C.Type: ApplicationFiled: July 1, 2020Publication date: August 4, 2022Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Masaaki KITANO, Hideo HOSONO, Toshiharu YOKOYAMA, Kayato OOYA, Kiya OGASAWARA, Ryu TAKASHIMA
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Patent number: 11394193Abstract: A power supply system includes a first circuit board mounting a power source circuit and an electronic fuse and a second circuit board mounting a power consumption circuit and a switch. When the electronic fuse detects an overcurrent due to a failure occurring in the power consumption circuit, the power supply system immediately cuts out an overcurrent flowing through the power consumption circuit while changing the switch from an open state to a short-circuited state according to a fault signal output from the electronic fuse. Accordingly, it is possible to safely separate the first circuit board and the second circuit board, and therefore it is possible to replace the second circuit board with another circuit board mounting a normal power consumption circuit.Type: GrantFiled: January 4, 2018Date of Patent: July 19, 2022Assignee: NEC Platforms, Ltd.Inventor: Masaaki Kitano
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Publication number: 20220143580Abstract: A molded sintered body containing a mayenite type compound, an inorganic binder sintered material, and a transition metal, wherein a content of the inorganic binder sintered material is 3 to 30 parts by mass with respect to 100 parts by mass of the molded sintered body, and the molded sintered body has at least one pore peak in each of a pore diameter range of 2.5 to 20 nm and a pore diameter range of 20 to 350 nm. A method for producing the molded sintered body, including mixing a precursor of a mayenite type compound and a raw material of an inorganic binder sintered material to prepare a mixture; molding the mixture to prepare a molded body of the mixture; firing the molded body to prepare a fired product; and supporting a transition metal on the fired product to produce a molded sintered body.Type: ApplicationFiled: February 26, 2020Publication date: May 12, 2022Applicants: Tsubame BHB Co., Ltd., Tokyo Institute of TechnologyInventors: Yasunori INOUE, Munenobu ITO, Kazuhisa KISHIDA, Hideo HOSONO, Masaaki KITANO, Toshiharu YOKOYAMA
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Publication number: 20220048782Abstract: The invention provides a perovskite-type oxynitride hydride which can be easily synthesized by achieving both improvement in catalytic performance and stabilization when used as a support of a catalyst. The oxynitride hydride is represented by general formula (1a) or (1b). ABO3-xNyHz??(1a) AB2O4-xNyHz??(1b) (In the above general formulas (1 a) and (1 b), A is at least one selected from the group consisting of Ba and Sr; B is at least one selected from the group consisting of Ce, La and Y; x represents a number represented by 0.2?x?2.0; y represents a number represented by 0.1?y?1.0; and z represents a number represented by 0.1?z?1.0.Type: ApplicationFiled: February 26, 2020Publication date: February 17, 2022Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Masaaki KITANO, Hideo HOSONO, Toshiharu YOKOYAMA, Jun KUJIRAI
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Patent number: 11235310Abstract: Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO.7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO.7Al2O3; and a third step for performing a reduction process on the 12CaO.7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.Type: GrantFiled: August 8, 2017Date of Patent: February 1, 2022Assignees: Tokyo Institute of Technology, Tsubame BHB Co., Ltd.Inventors: Hideo Hosono, Masaaki Kitano, Toshiharu Yokoyama, Jiang Li, Shigeki Kawamura, Kazuhisa Kishida
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Publication number: 20210288486Abstract: A power supply system includes a first circuit board mounting a power source circuit and an electronic fuse and a second circuit board mounting a power consumption circuit and a switch. When the electronic fuse detects an overcurrent due to a failure occurring in the power consumption circuit, the power supply system immediately cuts out an overcurrent flowing through the power consumption circuit while changing the switch from an open state to a short-circuited state according to a fault signal output from the electronic fuse. Accordingly, it is possible to safely separate the first circuit board and the second circuit board, and therefore it is possible to replace the second circuit board with another circuit board mounting a normal power consumption circuit.Type: ApplicationFiled: January 4, 2018Publication date: September 16, 2021Applicant: NEC Platforms, Ltd.Inventor: Masaaki KITANO
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Patent number: 10941427Abstract: A production system for a product selected from a nitrogen-containing product and a fermented and cultured product that does not involve (or can minimize) the transport of liquid ammonia can include: an ammonia synthesis apparatus in which an ammonia-containing gas is synthesized by reaction of a source gas containing hydrogen and nitrogen in the presence of a supported metal catalyst containing as a support one or more selected from the group consisting of: i) a conductive mayenite compound; ii) a two-dimensional electride compound or a precursor thereof; and iii) a complex formed of a support base containing at least one metal oxide selected from ZrO2, TiO2, CeO2, and MgO and a metal amide represented by a formula M(NH2)x (where M represents one or more selected from Li, Na, K, Be, Mg, Ca, Sr, Ba, and Eu; and x represents a valence number of M) supported by the support base.Type: GrantFiled: August 11, 2017Date of Patent: March 9, 2021Assignees: Ajinomoto Co., Inc., Tokyo Institute of TechnologyInventors: Mitsuhiro Kishino, Hiroyuki Kojima, Hideo Hosono, Michikazu Hara, Masaaki Kitano, Toshiharu Yokoyama, Toru Numaguchi, Munenobu Ito, Kazuteru Yamada, Hiromi Noguchi
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Publication number: 20210016254Abstract: Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO.7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO.7Al2O3; and a third step for performing a reduction process on the 12CaO.7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.Type: ApplicationFiled: October 1, 2020Publication date: January 21, 2021Applicants: Tokyo Institute of Technology, Tsubame BHB Co., Ltd.Inventors: Hideo Hosono, Masaaki Kitano, Toshiharu Yokoyama, Jiang Li, Shigeki Kawamura, Kazuhisa Kishida
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Publication number: 20200407762Abstract: Provided is a novel production system that does not involve, or can minimize, the transport of liquid ammonia in the production of an organic compound or the production of a microorganism by microbial fermentation. A production system for an organic compound or a microorganism includes: an ammonia synthesis apparatus in which an ammonia-containing gas is synthesized by reaction of a source gas containing hydrogen and nitrogen in the presence of a supported ruthenium catalyst; and a culture apparatus that cultures a microorganism having organic compound productivity using ammonia originating from the ammonia-containing gas obtained by using the ammonia synthesis apparatus.Type: ApplicationFiled: September 14, 2020Publication date: December 31, 2020Applicants: AJINOMOTO CO., INC., TOKYO INSTITUTE OF TECHNOLOGYInventors: Mitsuhiro Kishino, Hiroyuki Kojima, Hideo Hosono, Michikazu Hara, Masaaki Kitano, Toshiharu Yokoyama, Toru Numaguchi, Munenobu Ito, Kazuteru Yamada, Hiromi Noguchi
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Patent number: 10808267Abstract: Provided is a novel production system that does not involve, or can minimize, the transport of liquid ammonia in the production of an organic compound or the production of a microorganism by microbial fermentation. A production system for an organic compound or a microorganism includes: an ammonia synthesis apparatus in which an ammonia-containing gas is synthesized by reaction of a source gas containing hydrogen and nitrogen in the presence of a supported ruthenium catalyst; and a culture apparatus that cultures a microorganism having organic compound productivity using ammonia originating from the ammonia-containing gas obtained by using the ammonia synthesis apparatus.Type: GrantFiled: August 11, 2017Date of Patent: October 20, 2020Assignees: Ajinomoto Co., Inc., Tokyo Institute of TechnologyInventors: Mitsuhiro Kishino, Hiroyuki Kojima, Hideo Hosono, Michikazu Hara, Masaaki Kitano, Toshiharu Yokoyama, Toru Numaguchi, Munenobu Ito, Kazuteru Yamada, Hiromi Noguchi
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Patent number: 10792645Abstract: An electride, which is more stable and can be more easily obtained, is provided or is made available, and as a result, a catalyst particularly useful for chemical synthesis, in which the electride is particularly used, is provided. A transition metal-supporting intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1): A5X3 . . . (1) wherein A represents a rare earth element, and X represents Si or Ge.Type: GrantFiled: December 22, 2016Date of Patent: October 6, 2020Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGYInventors: Hideo Hosono, Masaaki Kitano, Tomofumi Tada, Toshiharu Yokoyama, Yoshitake Toda, Yangfan Lu, Jiang Li
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Patent number: 10759668Abstract: The present invention provides a supported metal catalyst, a method for synthesizing ammonia using said catalyst, and a supported metal material in which a transition metal is supported on a support, wherein the support is a metal hydride represented by general formula (1): XHn . . . (1); and in general formula (1), X represents at least one selected from the group consisting of atoms from Groups 2 and 3, and lanthanoid atoms, and n is in a range of 2<n<3.Type: GrantFiled: November 9, 2016Date of Patent: September 1, 2020Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGYInventors: Hideo Hosono, Michikazu Hara, Masaaki Kitano, Hiroshi Mizoguchi, Toshiharu Yokoyama, Kyosuke Yamagata
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Patent number: 10695751Abstract: The invention provides a Laves phase intermetallic compound having a composition represented by general formula ARu2 (A is Y, Sc, or at least one element selected from lanthanoid elements excluding Ce), the crystallite size thereof being 1 nm to 100 nm; a catalyst including the intermetallic compound as an active ingredient; and a method for producing ammonia using the same.Type: GrantFiled: September 15, 2016Date of Patent: June 30, 2020Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGYInventors: Hideo Hosono, Toshiharu Yokoyama, Masaaki Kitano, Hiroshi Mizoguchi, Takaya Ogawa
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INTERMETALLIC COMPOUND, HYDROGEN STORAGE/RELEASE MATERIAL, CATALYST AND METHOD FOR PRODUCING AMMONIA
Publication number: 20200164348Abstract: Provided are an intermetallic compound having high stability and high activity, and a catalyst using the same. A hydrogen storage/release material containing an intermetallic compound represented by formula (1): RTX . . . (1) wherein R represents a lanthanoid element, T represents a transition metal in period 4 or period 5 in the periodic table, and X represents Si, Al or Ge.Type: ApplicationFiled: July 12, 2018Publication date: May 28, 2020Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TOKYO INSTITUTE OF TECHNOLOGYInventors: Hideo HOSONO, Yutong GONG, Jlazhen WU, Masaaki KITANO, Toshiharu YOKOYAMA, Yangfan LU, Tiannan YE