Patents Assigned to National University Corporation Saitama University
  • Patent number: 10644618
    Abstract: A magnetic levitation device includes a pair of magnets, a displacement detection means, and a control means. The pair of magnets generate magnetic force for supporting a ferromagnet in a noncontact manner. The displacement detection means detect the displacement of the ferromagnet in a lateral shift direction. The control means suppresses the vibration of the ferromagnet in a lateral shift direction. The control means controls the pair of magnets so that a stronger magnetic force acts on the ferromagnet that is displaced in a direction departing from the center of the vibration than when the ferromagnet is displaced in a direction returning to the center of the vibration.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: May 5, 2020
    Assignee: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventor: Takeshi Mizuno
  • Publication number: 20200002249
    Abstract: A method for producing an unsaturated hydrocarbon, comprising: a step of contacting a raw material gas containing an alkane with a dehydrogenation catalyst to obtain a product gas containing at least one unsaturated hydrocarbon selected from a group consisting of olefins and conjugated dienes, wherein the dehydrogenation catalyst contains at least one additive element selected from the group consisting of Na, K, and Ca, Al, Mg, a group 14 metal element, and Pt, and a content of the additive element is 0.05% by mass or more and 0.70% by mass or less based on a total mass of the dehydrogenation catalyst.
    Type: Application
    Filed: December 27, 2017
    Publication date: January 2, 2020
    Applicants: JXTG Nippon Oil & Energy Corporation, National University Corporation Saitama University
    Inventors: Hideki KUROKAWA, Tatsuya ICHIJO, Nobuhiro KIMURA
  • Patent number: 10494318
    Abstract: A method for producing a conjugated diene according to one aspect of the present invention comprises a step of contacting a raw material gas containing an alkane with a first catalyst and a second catalyst in this order to obtain a product gas containing a conjugated diene. In the production method, the first catalyst contains Sn and Pt, and a content of Sn in the first catalyst is less than 12% by mass based on the total mass of the first catalyst; and the second catalyst contains Sn and Pt, and a content of Sn in the second catalyst is 12% by mass or more based on the total mass of the second catalyst.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: December 3, 2019
    Assignees: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Hideki Kurokawa, Tatsuya Ichijo, Nobuhiro Kimura
  • Patent number: 10483422
    Abstract: Provided is a photovoltaic device prepared with a semiconductor including a localized level or an intermediate band in a forbidden band and capable of improving the performance than before. The photovoltaic device includes a plurality of first layers made of a first semiconducting material and a plurality of second layers made of a second semiconducting material that is different from the first semiconducting material, wherein the second semiconducting material includes a localized level or intermediate band in a forbidden band, the first layers and the second layers are alternately laminated one by one, at least two of the second layers are each disposed between a pair of the first layers, and a thickness of each of the second layers is thinner than a thickness of four molecular layers of the first semiconducting material.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: November 19, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Daisuke Sato, Hiroyuki Yaguchi, Shuhei Yagi
  • Publication number: 20190276735
    Abstract: It is an object of the present invention to provide a fine fluorescent particle, which does not cause concentration quenching and has low ecotoxicity. Specifically, the present invention relates to a fine fluorescent particle containing an AIE-active compound, the particle consisting of a network polymer, wherein the fine fluorescent particle is characterized in that the AIE-active compound is, for example, a compound represented by the following formula (1): wherein E represents silicon or germanium; R1 and R2, which are the same or different, each represent a hydrocarbon group containing 1 to 6 carbon atoms, or a substituted or unsubstituted phenyl group; and R3, R4, R5 and R6, which are the same or different, each represent a substituted or unsubstituted phenyl group.
    Type: Application
    Filed: September 26, 2017
    Publication date: September 12, 2019
    Applicant: National University Corporation SAITAMA UNIVERSITY
    Inventors: Ken Hatano, Takahiko Matsushita, Daisuke Fujikawa, Koji Matsuoka
  • Patent number: 10280126
    Abstract: A method for producing a conjugated diene according to one aspect of the present invention comprises a step of contacting a raw material gas containing an olefin with a dehydrogenation catalyst to obtain a product gas containing a conjugated diene. In the production method, the dehydrogenation catalyst contains Al, a group 14 metal element, and Pt, and a content of the group 14 metal element in terms of oxide in the dehydrogenation catalyst is 9% by mass or more and 50% by mass or less based on the total mass of the dehydrogenation catalyst.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: May 7, 2019
    Assignees: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Hideki Kurokawa, Tatsuya Ichijo, Nobuhiro Kimura
  • Publication number: 20190024746
    Abstract: In the spring mechanism, the negative spring mechanism biasing the loading plate to the positive side in the z-direction has the spring shaft and interspring. The spring shaft is rotatably connected to the fixed part and is connected through the slider with respect to the loading plate so that it can rotate and can move in the x-direction. The connection part with the loading plate is positioned on the positive side in the z-direction and on the positive side in the x-direction relative to the connection part with the fixed part. An elastic force countering the compression is generated by the spring shaft. The interspring is connected to the loading plate and is connected through the slider to the spring shaft. It generates an elastic force countering the displacement to the positive side in the x-direction of the connection part of the spring shaft with the loading plate.
    Type: Application
    Filed: August 5, 2016
    Publication date: January 24, 2019
    Applicant: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventor: Masato Saitoh
  • Publication number: 20180339953
    Abstract: A method for producing a conjugated diene according to one aspect of the present invention comprises a step of contacting a raw material gas containing an alkane with a first catalyst and a second catalyst in this order to obtain a product gas containing a conjugated diene. In the production method, the first catalyst contains Sn and Pt, and a content of Sn in the first catalyst is less than 12% by mass based on the total mass of the first catalyst; and the second catalyst contains Sn and Pt, and a content of Sn in the second catalyst is 12% by mass or more based on the total mass of the second catalyst.
    Type: Application
    Filed: March 18, 2016
    Publication date: November 29, 2018
    Applicants: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Hideki KUROKAWA, Tatsuya ICHIJO, Nobuhiro KIMURA
  • Publication number: 20180065901
    Abstract: A method for producing a conjugated diene according to one aspect of the present invention comprises a step of contacting a raw material gas containing an olefin with a dehydrogenation catalyst to obtain a product gas containing a conjugated diene. In the production method, the dehydrogenation catalyst contains Al, a group 14 metal element, and Pt, and a content of the group 14 metal element in terms of oxide in the dehydrogenation catalyst is 9% by mass or more and 50% by mass or less based on the total mass of the dehydrogenation catalyst.
    Type: Application
    Filed: March 18, 2016
    Publication date: March 8, 2018
    Applicants: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Hideki KUROKAWA, Tatsuya ICHIJO, Nobuhiro KIMURA
  • Patent number: 9752214
    Abstract: A titanium alloy includes 15 to 27 atomic % (at %) of tantalum (Ta) and 0 to 8 at % of tin (Sn), the balance being titanium (Ti) and unavoidable impurities, when the entire amount of the titanium alloy is taken as 100 at %. Therefore, the titanium alloy provided has characteristics suitable for medical device materials, biocompatible materials, etc.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: September 5, 2017
    Assignees: NIPPON PISTON RING CO., LTD., NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Shunsuke Takeguchi, Yoshiki Ishikawa, Takasumi Kubo, Shin Ishida, Hiroki Takahashi, Masafumi Morita, Masahito Miki
  • Patent number: 9722433
    Abstract: A power transmitting device includes power transmitting coils, which contactlessly transmit electric power to a power receiving coil, and a switching device. When the power receiving coil is a solenoid coil, the switching device connects the power transmitting coils in parallel with each other such that magnetic fluxes generated inside the power transmitting coils flowing in the same direction along a winding axis. When the power receiving coil is a circular coil, the switching device connects the power transmitting coils in series with each other such that magnetic fluxes generated inside the power transmitting coils flowing in opposite directions along the winding axis.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: August 1, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Shinji Ichikawa, Masayuki Komatsu, Shigeru Abe, Hiroyoshi Kaneko
  • Publication number: 20170093307
    Abstract: A magnetic levitation device includes a pair of magnets, a displacement detection means, and a control means. The pair of magnets generate magnetic force for supporting a ferromagnet in a noncontact manner. The displacement detection means detect the displacement of the ferromagnet in a lateral shift direction. The control means suppresses the vibration of the ferromagnet in a lateral shift direction. The control means controls the pair of magnets so that a stronger magnetic force acts on the ferromagnet that is displaced in a direction departing from the center of the vibration than when the ferromagnet is displaced in a direction returning to the center of the vibration.
    Type: Application
    Filed: February 23, 2015
    Publication date: March 30, 2017
    Applicant: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventor: Takeshi Mizuno
  • Publication number: 20170067014
    Abstract: The present invention finds out find out the requirements necessary for preparing a cell condensate in vitro from a large number of cells (several ten thousand to several million cells) and provides a method of forming a cell condensate for self-organization which is capable of realizing complex higher structures (such as liver and kidney) and interactions with other organs. A method of preparing a cell condensate in vitro, comprising culturing a mixture of cells and/or tissues of a desired type in a total cell count of 400,000 or more and 100,000 to 400,000 mesenchymal cells to form a cell condensate of 1 mm or more in size. A cell condensate prepared by the above-described method. A method of preparing a three-dimensional tissue structure, comprising allowing self-organization of a cell condensate prepared by the above-described method to form a three-dimensional tissue structure that has been provided with higher structures.
    Type: Application
    Filed: February 26, 2015
    Publication date: March 9, 2017
    Applicants: PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVER SITY, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Takanori TAKEBE, Hideki TANIGUCHI, Hiroshi YOSHIKAWA
  • Patent number: 9565871
    Abstract: A grain flour includes milled grains of at least one grain selected from the group consisting of barley and oat. In the grain flour, the average grain diameter is in the range of 40-100 ?m. The content of grains having a grain diameter less than 20 ?m is not greater than 20 mass %, the content of grains having a grain diameter in the range of 20-100 ?m is in the range of 20-60 mass %, the content of grains having a grain diameter greater than 100 ?m and not greater than 500 ?m is in the range of 20-60 mass %, and the content of grains having a grain diameter greater than 500 ?m is not greater than 5%. An application food using the grain flour is produced from a starting material which contains at least 5% of the grain flour. A method for producing the grain flour is also provided.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: February 14, 2017
    Assignee: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Yoichi Tsumuraya, Kaoru Kawashima, Yoshikazu Shoji
  • Patent number: 9457676
    Abstract: According to one embodiment, contactless power transfer apparatus includes: transmission coil; primary capacitor; reception coil opposing transmission coil through gap; and secondary capacitor. Specification of frequency of the transmission coil and that of the reception coil are equal. At least one of electrical power specification and gap length specification of the transmission coil differ from the reception coil. When the electrical power specification of the power transmission coil differ from that of the power reception coil, the power is supplied from the transmission coil to the reception coil by using smaller one of the power of the transmission coil and of the reception coil as maximum power. When the gap length specification of the transmission coil differs from that of the reception coil, the transmission coil opposes the reception coil through the gap length, which is the specification of the transmission coil.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: October 4, 2016
    Assignees: TECHNOVA INC., NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Shigeru Abe, Tomio Yasuda, Akira Suzuki
  • Patent number: 9312729
    Abstract: A contactless power transfer core used for a power transmission coil or a power reception coil of a contactless power transfer apparatus includes: a winding core part wound by an electric wire; and a magnetic pole core part constituting a magnetic pole portion provided at both sides of the winding core part. A height of the uppermost part of a ferrite plate arranged on a face of the magnetic pole core part at a side opposing a counterpart coil is equal to or greater than a height of an outer circumference of the electric wire wound around the winding core part, and a height of the ferrite plate of a face at a side not opposing the counterpart coil is lower than the height of the outer circumference of the electric wire wound around the winding core.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: April 12, 2016
    Assignees: TECHNOVA INC., NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Tomio Yasuda, Hiroyuki Kishi, Shigeru Abe, Akira Suzuki
  • Patent number: 9266441
    Abstract: A half-bridge inverter is used for a high frequency alternating current power supply to be connected to a primary side of a contactless power transformer, and a voltage-doubler rectifier is used to convert a secondary-side alternating current output of the contactless power transformer into a direct current.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: February 23, 2016
    Assignees: TECHNOVA INC., National University Corporation SAITAMA UNIVERSITY
    Inventors: Shigeru Abe, Tomio Yasuda, Ryouichi Yamanouchi, Akira Suzuki
  • Publication number: 20150372498
    Abstract: A power transmitting device includes power transmitting coils, which contactlessly transmit electric power to a power receiving coil, and a switching device. When the power receiving coil is a solenoid coil, the switching device connects the power transmitting coils in parallel with each other such that magnetic fluxes generated inside the power transmitting coils flowing in the same direction along a winding axis. When the power receiving coil is a circular coil, the switching device connects the power transmitting coils in series with each other such that magnetic fluxes generated inside the power transmitting coils flowing in opposite directions along the winding axis.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 24, 2015
    Applicants: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji ICHIKAWA, Masayuki KOMATSU, Shigeru ABE, Hiroyoshi KANEKO
  • Publication number: 20150287867
    Abstract: Provided is a photovoltaic device prepared with a semiconductor including a localized level or an intermediate band in a forbidden band and capable of improving the performance than before. The photovoltaic device includes a plurality of first layers made of a first semiconducting material and a plurality of second layers made of a second semiconducting material that is different from the first semiconducting material, wherein the second semiconducting material includes a localized level or intermediate band in a forbidden band, the first layers and the second layers are alternately laminated one by one, at least two of the second layers are each disposed between a pair of the first layers, and a thickness of each of the second layers is thinner than a thickness of four molecular layers of the first semiconducting material.
    Type: Application
    Filed: May 15, 2012
    Publication date: October 8, 2015
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY
    Inventors: Daisuke Sato, Hiroyuki Yaguchi, Shuhei Yagi
  • Publication number: 20150061458
    Abstract: An electret-structure encompasses a fluorine-resin film 21, an electrode 22 formed on one surface of the fluorine-resin film 21, and a silica layer 21 formed on another surface of the fluorine-resin film 21. The silica layer 21 is implemented by a plurality of island-shaped silica regions 201 for covering the fluorine-resin film 21 in a topology such that the island-shaped silica regions 201 are isolated from each other. And negative charges are deposited on the island-shaped silica regions 201. The static-induction conversion element with the electret-structure 1 can be mounted on a substrate by reflow-process through Pb-free solder.
    Type: Application
    Filed: April 12, 2013
    Publication date: March 5, 2015
    Applicant: National University Corporation Saitama University
    Inventor: Kensuke Kageyama