Patents Assigned to Yokohama National University
  • Patent number: 11078416
    Abstract: Provided are a transparent fluorescent sialon ceramic having fluorescence and optical transparency; and a method of producing the same. Such a transparent fluorescent sialon ceramic includes a sialon phosphor which contains a matrix formed of a silicon nitride compound represented by the formula Mx(Si,Al)y(N,O)z (here, M represents at least one selected from the group consisting of Li, alkaline earth metals, and rare earth metals, 0?x/z<3, and 0<y/z<1) and a luminescent center element.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: August 3, 2021
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takuma Takahashi, Junichi Tatami, Yuki Sano, Takehiko Tanaka, Masahiro Yokouchi
  • Patent number: 11079541
    Abstract: An optical deflection device that achieve both high beam quality and wide angular range of deflection and compatibility with an optical integration technology of silicon photonics. The optical deflection device is a silicon photonics device including a periodic structure of a refractive index. The optical deflection device includes two configurations, which are (1) a configuration in which an optical propagation part where light propagates is a microstructure formed on silicon, and (2) a configuration in which the microstructure constituting the optical propagation part includes a periodic structure that generates slow light and a periodic structure that radiates light. The microstructure formed on the silicon of (1) makes it possible to employ the optical integration technology of silicon photonics and form the optical deflection device. The two periodic structures of (2) make it possible to form a light beam with high beam quality and a wide angular range of deflection.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: August 3, 2021
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Toshihiko Baba, Fumio Koyama
  • Patent number: 11067746
    Abstract: In a light deflection device, the radiation efficiency of radiated light beams is to be improved. The light deflection device is configured by a photonic crystal waveguide having a lattice array with low refractive index parts periodically arrayed in a surface of a high refractive-index member. The lattice array has a dual-periodic structure consisting of a first periodic array and a second periodic array which differ from each other in periodic arrangement of the low refractive index parts. A line defect where no low refractive index parts are arrayed constitutes a waveguide core for propagating incident light. The cross section of at least either the first periodic array or the second periodic array constituting the periodic arrays of the dual-periodic structure is asymmetrical in the thickness direction of the low refractive index parts.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: July 20, 2021
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Toshihiko Baba, Moe Takeuchi, Hiroyuki Ito, Yuma Kusunoki
  • Patent number: 11065606
    Abstract: The purpose of the present invention is to provide a metal-substituted beta zeolite that exhibits a more excellent catalytic performance than conventional one, and a method for producing the same. The present invention provides a metal-substituted beta zeolite by subjecting an alkali metal-form beta zeolite produced without using an organic structure-directing agent to ion exchange with ammonium ion and then, using a filter cake procedure, to ion exchange with copper ion or iron(II) ion. The present invention also provides a metal-substituted beta zeolite which has been ion exchanged with copper ion or iron(II) ion and in which the amount of Lewis acid sites is greater than the amount of Bronsted acid sites when the amount of Bronsted acid sites and the amount of Lewis acid sites are measured by ammonia infrared-mass spectroscopy temperature-programmed desorption on the as-produced state.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: July 20, 2021
    Assignees: Mitsui Mining & Smelting Co., Ltd., NATIONAL UNIVERSITY CORPORATION TOTTORI UNIVERSITY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Yoshihiro Kubota, Satoshi Inagaki, Naonobu Katada, Satoshi Suganuma, Yasuo Yamazaki, Takahiro Kogawa
  • Patent number: 11067506
    Abstract: A hydrogen storage metal is disposed on a base material in a predetermined shape and a predetermined size such that hydrogen is detected based on surface plasmon resonance induced by incident light. The hydrogen storage metal is formed of a film body containing palladium and a noble metal. A spectrum of the light having passed through the hydrogen storage metal in which hydrogen is stored has a peak in a wavelength band separated from an absorption spectrum C1 of carbon dioxide with respect to the light and an absorption spectra H1 to H3 of water with respect to the light.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 20, 2021
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, TOKYO OHKA KOGYO CO., LTD.
    Inventors: Yoshiaki Nishijima, Takeshi Iwai, Isao Hirano
  • Patent number: 11035045
    Abstract: An organic hydride production apparatus that enables the reduction reaction at the cathode of an organic compound having an unsaturated bond to proceed at high current efficiency and at a low electric power consumption rate, and a method for producing an organic hydride that uses this production apparatus.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: June 15, 2021
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, DE NORA PERMELEC LTD.
    Inventors: Shigenori Mitsushima, Yasutomo Takakuwa, Yoshinori Nishiki, Akihiro Kato, Akiyoshi Manabe
  • Publication number: 20210163918
    Abstract: Provided are a cell-containing hydrogel body and a method of producing the same, which enable simple and effective control of the size of a boundary surface for an interaction between cells. The method of producing a cell-containing hydrogel body includes: forming, under a gas phase, a first hydrogel droplet on a surface of a substrate, the first hydrogel droplet containing first cells being dispersed therein and a first hydrogel polymer; forming, under a gas phase, a second hydrogel droplet on the surface, the second hydrogel droplet containing second cells being dispersed therein and a second hydrogel polymer, the second hydrogel droplet being combined with the first hydrogel droplet; and forming, under a gas phase, a cell-containing hydrogel body on the surface by gelling a hydrogel droplet-combined body including a first droplet portion derived from the first hydrogel droplet and a second droplet portion derived from the second hydrogel droplet.
    Type: Application
    Filed: April 16, 2019
    Publication date: June 3, 2021
    Applicants: National University Corporation Yokohama National University, Kanagawa Institute of Industrial Science and Technology
    Inventors: Junji Fukuda, Tatsuto Kageyama
  • Publication number: 20210151941
    Abstract: A connector system is provided with a first connector including a first transmission line, and a second connector including a second transmission line. The second connector includes a processing unit configured to perform an information transmission process of creating information regarding verification, and transmitting the information to the first connector. The first connector includes: a switch configured to, in a state where the first connector and the second connector are connected to each other, select whether or not to electrically connect the first transmission line and the second transmission line to each other; a verification unit configured to perform a verification process of verifying the second connector, based on the information received from the second connector; and a control unit configured to control the switch, based on a result of the verification process.
    Type: Application
    Filed: November 30, 2018
    Publication date: May 20, 2021
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Yoshikazu ISOYAMA, Yoichi HATA, Tsutomu MATSUMOTO
  • Patent number: 10982140
    Abstract: A nitride phosphor particle dispersion-type sialon ceramic of the present invention includes a matrix formed of a sialon-based compound; and at least one nitride phosphor which is dispersed in the matrix and contains a luminescence center element.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: April 20, 2021
    Assignees: KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Takuma Takahashi, Junichi Tatami, Ippei Kokubun, Masahiro Yokouchi
  • Patent number: 10954586
    Abstract: A copper alloy disclosed in the present description has a basic alloy composition represented by Cu100?(x+y)SnxAly (where 8?x?12 and 8?y?9 are satisfied), in which a main phase is a ?CuSn phase with Al dissolved therein, and the ?CuSn phase undergoes martensitic transformation when heat-treated or worked. A method for producing a copper alloy disclosed in the present description is a casting step of melting and casting a raw material containing Cu, Sn, and Al and having a basic alloy composition represented by Cu100?(x+y)SnxAly (where 8?x?12 and 8?y?9 are satisfied) so as to obtain a cast material, and a homogenization step of homogenizing the cast material in a temperature range of a ?CuSn phase so as to obtain a homogenized material, the method includes at least the casting step.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 23, 2021
    Assignees: NGK Insulators, Ltd., National University Corporation Yokohama National University
    Inventors: Mahoto Takeda, Koudai Sasaki, Naokuni Muramatsu, Takanari Nakajima
  • Publication number: 20210079345
    Abstract: Provided are a method and kit for growth of hair follicle epithelial stem cells on a large scale while maintaining their hair regeneration ability. The culture method for hair follicle epithelial stem cells includes: an accumulating step of forming an accumulation of hair follicle epithelial stem cells by inoculating a cell culture vessel with the hair follicle epithelial stem cells; a mixing step of producing a mixture of an extracellular matrix component and the accumulation of the hair follicle epithelial stem cells by adding the extracellular matrix component to the accumulation of the hair follicle epithelial stem cells; and a culturing step of culturing the hair follicle epithelial stem cells by adding a medium to the mixture. The culture kit for hair follicle epithelial stem cells includes: a cell culture vessel formed of a material having oxygen permeability; an extracellular matrix component; and a medium.
    Type: Application
    Filed: February 4, 2019
    Publication date: March 18, 2021
    Applicants: National University Corporation Yokohama National University, Kanagawa Institute of Industrial Science and Technology
    Inventors: Junji Fukuda, Tatsuto Kageyama, Sugi Hirano
  • Patent number: 10889903
    Abstract: An anode for oxygen evolution that operates at a small overpotential and in a stable manner, and can be used favorably in an organic chemical hydride electrolytic synthesis apparatus. An anode 10 for oxygen evolution that evolves oxygen in a sulfuric acid aqueous solution containing a substance to be hydrogenated dissolved at a concentration higher than 1 mg/L, wherein an anode substrate 10a is composed of a valve metal, and an anode catalyst layer 10b containing at least one oxide, nitride or carbide of iridium, and at least one oxide, nitride or carbide of at least one metal selected from the group consisting of elements belonging to groups 4, 5 and 13 of the periodic table is formed on the surface of the anode substrate 10a.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: January 12, 2021
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, DE NORA PERMELEC LTD.
    Inventors: Shigenori Mitsushima, Yasutomo Takakuwa, Awaludin Zaenal, Akihiro Kato
  • Publication number: 20200406241
    Abstract: An object of the invention is to provide an oxygen reduction catalyst composed of a titanium oxynitride having high oxygen reduction capacity. The oxygen reduction catalyst of the invention is a titanium oxynitride that has a nitrogen element content of 0.1 to 2.0 mass %, has a crystal structure of rutile titanium dioxide in a powder X-ray diffraction measurement, and has a signal intensity ratio N—Ti—N/O—Ti—N in an X-ray photoelectron spectroscopic analysis of in the range of 0.01 to 0.50. Further, the oxygen reduction catalyst of the invention is a titanium oxynitride that includes titanium oxide particles, has a crystal structure of rutile titanium dioxide, and has an amorphous layer in a surface layer of the titanium oxide particles.
    Type: Application
    Filed: December 22, 2017
    Publication date: December 31, 2020
    Applicants: SHOWA DENKO K.K., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Kunchan LEE, Yoshinori YAMATO, Kenichiro OTA, Akimitsu ISHIHARA
  • Patent number: 10871331
    Abstract: A cooling device and a motor are provided. The cooling device that cools a heating element is provided with: a cooling chamber for cooling the heating element with a first cooling medium; a radiator chamber for releasing the heat of the first cooling medium to the outside; and a first connection path and a second connection path for connecting the cooling chamber and the radiator chamber. When part of the first cooling medium in the cooling chamber is gasified, at least part of the gasified first cooling medium moves into the first connection path, thus causing a circulation in which the first cooling medium in the cooling chamber flows into the radiator chamber via the first connection path, and the first cooling medium in the radiator chamber flows into the cooling chamber via the second connection path.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: December 22, 2020
    Assignees: NIDEC CORPORATION, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Quing Yu, Tatsuya Noda, Shunichi Tanaka, Yoshinobu Nakamura, Masato Nakanishi
  • Patent number: 10865373
    Abstract: The present invention provides a method for manufacturing a regular and high-density regenerated hair follicle primordium aggregation similar to the hair follicle tissue of a mammal in a simple manner. A regenerated hair follicle primordium aggregation manufacturing method of the present invention includes a step of forming hair follicle primordia by inoculating a microwell plate, which includes regularly arranged microwell portions, with mesenchymal cells and epithelial cells and culturing a mixture of the cells while supplying oxygen thereto.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: December 15, 2020
    Assignees: National University Corporation Yokohama National University, Kanagawa Institute of Industrial Science and Technology
    Inventors: Junji Fukuda, Tatsuto Kageyama, Chisa Yoshimura, Kisaki Onishi
  • Publication number: 20200377973
    Abstract: A metal porous body having a three-dimensional network structure, includes: a framework forming the three-dimensional network structure; and a coating layer having fine pores and coating the framework, the three-dimensional network structure including a rib and a node connecting a plurality of ribs, the framework including an alkali-resistant first metal, the fine pores having an average fine pore diameter of 10 nm or more and 1 ?m or less, the coating layer including an alkali-resistant second metal and optionally including an alkali-soluble metal, the alkali-soluble metal being contained at a proportion of 0% by mass or more and 30% by mass or less with reference to a total mass of the framework and the coating layer.
    Type: Application
    Filed: December 6, 2018
    Publication date: December 3, 2020
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Kazuki OKUNO, Takahiro HIGASHINO, Hiromasa TAWARAYAMA, Masatoshi MAJIMA, Haruki MASUMURA, Yoshiyuki KURODA, Shigenori MITSUSHIMA
  • Publication number: 20200309235
    Abstract: A planetary gear device configured by combining a plurality of planetary gear mechanisms includes first and second planetary gear mechanisms sharing a carrier, wherein each planetary gear mechanism is composed of an internal gear Ik (k is an integer equal to or larger than 2) and a planetary gear Pk which is engaged with the internal gear Ik and revolves in a circumferential direction of the internal gear, the planetary gear Pk of each planetary gear mechanism is composed of a spur gear in the form of an external gear, the planetary gears Pk of the planetary gear mechanisms share a central axis or have central axes integrally connected to integrally rotate on a common rotation central axis line or are integrated with each other to integrally rotate on the common rotation central axis line in order to configure the entire planetary gear device as a two-stage gear mechanism, the planetary gear device is configured such that the number of teeth zp1 of a first planetary gear constituting the first planetary gear
    Type: Application
    Filed: June 6, 2017
    Publication date: October 1, 2020
    Applicant: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Yasutaka Fujimoto, Daiji Kobuse
  • Publication number: 20200277727
    Abstract: A high-temperature-steam-oxidation-resistive coated reinforcement fiber applicable to a fiber reinforced composite, is provided with: a reinforcement fiber; a coating layer covering the reinforcement fiber and including a rare-earth silicate; an exfoliative layer intervening in an interface between the coating layer and the reinforcement fiber; and a supplemental coating layer covering the reinforcement fiber, the exfoliative layer and the coating layer.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Applicants: IHI CORPORATION, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, JAPAN FINE CERAMICS CENTER
    Inventors: Takeshi NAKAMURA, Masahiro Kotani, Ken Goto, Akihiko Ito, Satoshi Kitaoka, Daisaku Yokoe, Tetsushi Matsuda
  • Patent number: 10720641
    Abstract: A positive electrode active material for a lithium ion secondary battery has a rock salt type structure represented by General Formula: LixTi2x-1Mn2-3xO (0.50<x<0.67)??(1) and has an average particle size of 0.5 ?m or less.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: July 21, 2020
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventor: Naoaki Yabuuchi
  • Publication number: 20200228900
    Abstract: An electroacoustic transducer includes: a diaphragm; a magnetic circuit having a magnetic gap; a frame that holds the diaphragm and the magnetic circuit; a voice coil having one end portion positioned within the magnetic gap and the other end portion coupled to the diaphragm; and a low friction material that is disposed in a sliding portion formed by the voice coil and the magnetic circuit, and includes polymer compounds swollen with liquid.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Applicants: PANASONIC CORPORATION, KYOTO UNIVERSITY, National University Corporation YOKOHAMA National University
    Inventors: Hidetoshi HIRAOKA, Yoshinobu TSUJII, Keita SAKAKIBARA, Ken NAKANO