Patents Assigned to National University Corporation Saitama University
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Patent number: 10644618Abstract: 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: GrantFiled: February 23, 2015Date of Patent: May 5, 2020Assignee: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventor: Takeshi Mizuno
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Publication number: 20200002249Abstract: 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: ApplicationFiled: December 27, 2017Publication date: January 2, 2020Applicants: JXTG Nippon Oil & Energy Corporation, National University Corporation Saitama UniversityInventors: Hideki KUROKAWA, Tatsuya ICHIJO, Nobuhiro KIMURA
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Patent number: 10494318Abstract: 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: GrantFiled: March 18, 2016Date of Patent: December 3, 2019Assignees: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Hideki Kurokawa, Tatsuya Ichijo, Nobuhiro Kimura
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Patent number: 10483422Abstract: 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: GrantFiled: May 15, 2012Date of Patent: November 19, 2019Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Daisuke Sato, Hiroyuki Yaguchi, Shuhei Yagi
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Publication number: 20190276735Abstract: 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: ApplicationFiled: September 26, 2017Publication date: September 12, 2019Applicant: National University Corporation SAITAMA UNIVERSITYInventors: Ken Hatano, Takahiko Matsushita, Daisuke Fujikawa, Koji Matsuoka
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Patent number: 10280126Abstract: 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: GrantFiled: March 18, 2016Date of Patent: May 7, 2019Assignees: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Hideki Kurokawa, Tatsuya Ichijo, Nobuhiro Kimura
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Publication number: 20190024746Abstract: 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: ApplicationFiled: August 5, 2016Publication date: January 24, 2019Applicant: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventor: Masato Saitoh
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Publication number: 20180339953Abstract: 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: ApplicationFiled: March 18, 2016Publication date: November 29, 2018Applicants: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Hideki KUROKAWA, Tatsuya ICHIJO, Nobuhiro KIMURA
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Publication number: 20180065901Abstract: 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: ApplicationFiled: March 18, 2016Publication date: March 8, 2018Applicants: JXTG NIPPON OIL & ENERGY CORPORATION, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Hideki KUROKAWA, Tatsuya ICHIJO, Nobuhiro KIMURA
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Patent number: 9752214Abstract: 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: GrantFiled: January 31, 2012Date of Patent: September 5, 2017Assignees: NIPPON PISTON RING CO., LTD., NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Shunsuke Takeguchi, Yoshiki Ishikawa, Takasumi Kubo, Shin Ishida, Hiroki Takahashi, Masafumi Morita, Masahito Miki
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Patent number: 9722433Abstract: 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: GrantFiled: January 30, 2014Date of Patent: August 1, 2017Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Shinji Ichikawa, Masayuki Komatsu, Shigeru Abe, Hiroyoshi Kaneko
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Publication number: 20170093307Abstract: 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: ApplicationFiled: February 23, 2015Publication date: March 30, 2017Applicant: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventor: Takeshi Mizuno
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Publication number: 20170067014Abstract: 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: ApplicationFiled: February 26, 2015Publication date: March 9, 2017Applicants: PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVER SITY, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Takanori TAKEBE, Hideki TANIGUCHI, Hiroshi YOSHIKAWA
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Patent number: 9565871Abstract: 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: GrantFiled: October 25, 2011Date of Patent: February 14, 2017Assignee: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Yoichi Tsumuraya, Kaoru Kawashima, Yoshikazu Shoji
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Patent number: 9457676Abstract: 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: GrantFiled: February 7, 2012Date of Patent: October 4, 2016Assignees: TECHNOVA INC., NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Shigeru Abe, Tomio Yasuda, Akira Suzuki
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Patent number: 9312729Abstract: 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: GrantFiled: January 18, 2012Date of Patent: April 12, 2016Assignees: TECHNOVA INC., NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Tomio Yasuda, Hiroyuki Kishi, Shigeru Abe, Akira Suzuki
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Patent number: 9266441Abstract: 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: GrantFiled: January 18, 2012Date of Patent: February 23, 2016Assignees: TECHNOVA INC., National University Corporation SAITAMA UNIVERSITYInventors: Shigeru Abe, Tomio Yasuda, Ryouichi Yamanouchi, Akira Suzuki
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Publication number: 20150372498Abstract: 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: ApplicationFiled: January 30, 2014Publication date: December 24, 2015Applicants: NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITY, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinji ICHIKAWA, Masayuki KOMATSU, Shigeru ABE, Hiroyoshi KANEKO
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Publication number: 20150287867Abstract: 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: ApplicationFiled: May 15, 2012Publication date: October 8, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SAITAMA UNIVERSITYInventors: Daisuke Sato, Hiroyuki Yaguchi, Shuhei Yagi
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Publication number: 20150061458Abstract: 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: ApplicationFiled: April 12, 2013Publication date: March 5, 2015Applicant: National University Corporation Saitama UniversityInventor: Kensuke Kageyama