Patents Assigned to National Institute for Materials Science
  • Superconducting magnet device and method for limiting current decrease in case of abnormality therein
    Patent number: 11171479
    Abstract: A superconducting magnet device including a superconducting coil formed of a high-temperature superconducting wire, a power supply which supplies current to the superconducting coil, and a protector capable of forming a short-circuit path which short-circuits both ends of the superconducting coil to each other is installed. Current is made to flow from the power supply to the superconducting coil in a superconducting state, and the superconducting coil thereby generates a magnetic field. After the magnetic field is generated, when an abnormality of the superconducting magnet device is detected, or when the power supply and the superconducting coil are disconnected from each other, the short-circuit path is formed by the protector.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: November 9, 2021
    Assignees: RIKEN, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Masato Takahashi, Hideaki Maeda, Kenjiro Hashi, Gen Nishijima, Shinji Matsumoto, Takashi Noguchi, Tadashi Shimizu
  • Search method, search device, and search system
    Patent number: 11163829
    Abstract: The present invention searches for, in order of priority, a combination of material property parameters having a significant relationship, from among arbitrary combinations of multiple material property parameters.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 2, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Michiko Yoshitake, Shinjiro Yagyu, Toyohiro Chikyo, Isao Kuwajima
  • MEASUREMENT DEVICE AND EVALUATION METHOD
    Publication number: 20210318261
    Abstract: A measurement device according to one embodiment of the present invention, comprises: a voltage applying part for applying a voltage between electrodes of a biosensor, the biosensor comprising a solid electrolyte and at least two electrodes, and being configured such that the solid electrolyte and the electrodes are in contact with each other; a detection part for measuring a current value flowing between the electrodes when the voltage is applied; and a computing part for providing information resulting from the microorganisms by comparing the current value with a reference value stored in advance in which a current value and at least one type of factor selected from the group consisting of the presence or absence of the biological particles, a proliferative state of the microorganisms, and the presence or absence of expression of pathogenicity of the microorganisms are defined.
    Type: Application
    Filed: August 6, 2019
    Publication date: October 14, 2021
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Akihiro OKAMOTO, Wei-Peng LI
  • ADHESION PREVENTION MATERIAL
    Publication number: 20210316046
    Abstract: An adhesion prevention material consisting of: (1) a first agent comprising a gelatin derivative, the gelatin derivative (a) including a structure represented by the following formula, GltnNH—CHR1R2, in the formula, Gltn represents a gelatin residue, R1 represents an alkyl group with 5 to 17 carbon atoms, and R2 represents a hydrogen atom or an alkyl group with 5 to 17 carbon atoms; (b) having imino group/amino group (molar ratio) of 1/99 to 30/70; and (c) having a weight average molecular weight of 10,000 to 50,000; and (2) a second agent comprising a crosslinker for the gelatin derivative.
    Type: Application
    Filed: August 27, 2019
    Publication date: October 14, 2021
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Tetsushi TAGUCHI
  • Composition, a process of producing the same, and use of the same
    Patent number: 11142687
    Abstract: The present invention has for its object to provide a composition in which a photoluminescent carbon nanoparticle having no dependency of an emission wavelength on an excitation wavelength and being enhanced in terms of quantum efficiency is dispersed, a process of producing the same, and an application of the same. The composition of the invention has a photoluminescent carbon nanoparticle dispersed in a water-soluble solvent. The photoluminescent carbon nanoparticle contains a carbon atom, an oxygen atom, a nitrogen atom, and a hydrogen atom if required. As shown in FIG. 6, the photoluminescent carbon nanoparticle has an intensity of a C—N bond and/or C—O bond-derived peak (285.98 eV) larger than that of a C—C bond and/or C—H bond-derived peak (284.95 eV) in terms of X-ray photoelectron spectroscopic spectra, and a Raman spectrum having a peak based on a G-band and a D-band.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: October 12, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tadaaki Nagao, Karuna Kar Nanda
  • Search system, search method, and material property database management apparatus
    Patent number: 11138772
    Abstract: Provided are a search system and a search method capable of searching an unknown combination of material property parameters having a significant relationship based on already known relationships from among multiple arbitrary combinations of material property parameters. The search system includes a database, a graph generator, and a graph searcher, and is configured as follows: the database stores the plurality of pairs of material property parameters having mutual relationships, and the graph generator generates a graph in which material property parameters stored in the database are nodes, and an inter-node corresponding to the pairs of material property parameters stored to have mutual relationships is an edge. The graph searcher searches the graph generated by the graph generator based on a given search condition and outputs a search result.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: October 5, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Michiko Yoshitake, Shinjiro Yagyu, Toyohiro Chikyo, Isao Kuwajima
  • Titanium alloy and method of manufacturing material for timepiece exterior part
    Patent number: 11131010
    Abstract: A titanium alloy of the present invention includes aluminum at a ratio of 28.0 at % or more and 38.0 at % or less, iron at a ratio of 2.0 at % or more and 6.0 at % or less, and titanium and inevitable impurities as the balance or includes aluminum at a ratio of 28.0 at % or more and 38.0 at % or less, manganese at a ratio of 4.0 at % or more and 8.0 at % or less, and titanium and inevitable impurities as the balance. Further, the titanium alloy of the present invention may include silicon at a ratio of 0.3 at % or more and 1.5 at % or less.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 28, 2021
    Assignees: National Institute for Materials Science, Citizen Watch Co., Ltd.
    Inventors: Toshimitsu Tetsui, Masahiro Satoh, Takayuki Ogawa
  • Magnetic element, magnetic memory device, and magnetic sensor
    Patent number: 11133459
    Abstract: According to one embodiment, a magnetic element includes a first layer and a second layer. The first layer includes a first element and a second element. The first element includes at least one selected from the group consisting of Fe, Co, and Ni. The second element includes at least one selected from the group consisting of Ir and Os. The second layer is nonmagnetic.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: September 28, 2021
    Assignees: National Institute of Advanced Industrial Science and Technology, TOHOKU UNIVERSITY, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Takayuki Nozaki, Shinji Yuasa, Rachwal Anna Koziol, Masahito Tsujikawa, Masafumi Shirai, Kazuhiro Hono, Tadakatsu Ohkubo, Xiandong Xu
  • ANALYSIS PROCESSING METHOD USING IMPEDANCE SPECTRUM DATA, IMPEDANCE SPECTRUM DATA ANALYSIS PROCESSING SYSTEM, AND IMPEDANCE SPECTRAL ANALYSIS PROCESSING PROGRAM
    Publication number: 20210293867
    Abstract: This method for analysis processing by using measured impedance spectrum data includes: a step for determining whether to reset the maximum value and/or the minimum value of logarithmic relaxation time corresponding to a measured logarithmic frequency on the basis of the measured impedance spectrum data; a step for setting the number of equal-interval divisions within the range of the logarithmic relaxation time set in the determination step; and a step for analyzing parameters R?, T, L, and Rl for the range of the set logarithmic relaxation time so as to satisfy a prescribed expression (A) by applying a regularized least-squares method.
    Type: Application
    Filed: July 16, 2019
    Publication date: September 23, 2021
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Kiyoshi KOBAYASHI
  • Ceramic electronic component including ceramic nanosheets having multimodal lateral size distribution and method of manufacturing the same and electronic device
    Patent number: 11120944
    Abstract: A ceramic electronic component includes a pair of electrodes facing each other and a dielectric layer disposed between the pair of electrodes and including a plurality of ceramic nanosheets, where the plurality of ceramic nanosheets has a multimodal lateral size distribution expressed by at least two separated peaks, a method of manufacturing the same, and an electronic device including the ceramic electronic component.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: September 14, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hyeon Cheol Park, Takayoshi Sasaki, Minoru Osada, Chan Kwak, Daejin Yang, Doh Won Jung, Youngjin Cho
  • THERMOELECTRIC MATERIAL
    Publication number: 20210280759
    Abstract: The present invention provides a thermoelectric material excellent in heat resistance with less degradation of thermoelectric characteristics even in a high temperature environment. The thermoelectric material comprises a compound represented by a chemical formula Mg2Si1?xSnx(0<x<1) wherein at least one of the Si site and the Sn site of the compound is replaced with at least one of Sb and Bi, and an added Fe.
    Type: Application
    Filed: October 5, 2017
    Publication date: September 9, 2021
    Applicants: Mitsuba Corporation, National Institute for Materials Science
    Inventors: Satoki Tada, Yukihiro Isoda
  • Layered silicate powder granules and method for producing the same
    Patent number: 11111151
    Abstract: The invention has for its object to use an evaporation-spray drying process thereby providing layered silicate powder granules, each one containing a flat particle having an opening or recess in its surface center. Each of the layered silicate powder granule contains a flat particle including a layered silicate formed by evaporation-spray drying and a rheology modifier for modifying the crystal edge face of the layered silicate and having an opening or recess in its surface center.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: September 7, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroshi Sakuma, Kenji Tamura
  • Magnetic tunnel junction, magnetoresistive element and spintronics device in which said magnetic tunnel junction is used, and method of manufacturing magnetic tunnel junction
    Patent number: 11105867
    Abstract: The object of the present invention is to attain an unconventionally high tunnel magnetoresistance (TMR) ratio by using a barrier layer made of an MgAl2O4 type insulator material with a spinel structure. The problem can be solved by a magnetic tunnel junction in which a barrier layer is made of a cubic nonmagnetic material having a spinel structure, and both of two ferromagnetic layers that are adjacently on and below the barrier layer are made of a Co2FeAl Heusler alloy. Preferably, the nonmagnetic material is made of oxide of an Mg1?xAlx (0<x?1) alloy, and exhibits tunnel magnetoresistance of 250% or more and 34000% or less at a room temperature.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: August 31, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroaki Sukegawa, Thomas Scheike, Seiji Mitani, Tadakatsu Ohkubo, Kazuhiro Hono, Kouichiro Inomata
  • Magnetic tunnel junction, spintronics device using same, and method for manufacturing magnetic tunnel junction
    Patent number: 11107976
    Abstract: According to an embodiment, a magnetic tunnel junction includes a tunnel barrier layer provided between a first magnetic layer and a second magnetic layer. The tunnel barrier layer is a crystal body made of a stacked structure of a first insulating layer and a second insulating layer. The crystal body is oriented. The first insulating layer is made of an oxide of Mg1-xXx (0?x?0.15). X includes at least one element selected from the group consisting of Al and Ti. The second insulating layer is made of an oxide of an alloy including at least two elements selected from the group consisting of Mg, Al, Zn, and Li. Both the first magnetic layer and the second magnetic layer are made of an alloy including B and at least one element selected from the group consisting of Co and Fe.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: August 31, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroaki Sukegawa, Ikhtiar, Shinya Kasai, Kazuhiro Hono, Xiandong Xu
  • LIGHT-EMITTING DEVICE
    Publication number: 20210249569
    Abstract: A light-emitting device including a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor, wherein the fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source, has a peak wavelength in the range exceeding 700 nm, and has an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength.
    Type: Application
    Filed: June 12, 2019
    Publication date: August 12, 2021
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, PHOENIX ELECTRIC CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Takashi FUKUDA, Tetsuya GOUDA, Yuta SAKIMOTO, Naoto HIROSAKI, Kohsei TAKAHASHI
  • Phosphor and light-emitting equipment using phosphor
    Patent number: 11084980
    Abstract: Phosphors include a CaAlSiN3 family crystal phase, wherein the CaAlSiN3 family crystal phase comprises at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: August 10, 2021
    Assignees: MITSUBISHI CHEMICAL CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE, NICHIA CORPORATION, CITIZEN ELECTRONICS CO., LTD.
    Inventors: Naoto Hirosaki, Kyota Ueda, Hajime Yamamoto
  • MULTI-LAYERED RADIATION LIGHT SOURCE
    Publication number: 20210243858
    Abstract: Provided is a radiation light source that enables adjustment of infrared radiation to a significantly narrow band. A plasmonic reflector layer consisting of a plasmonic material, a resonator layer consisting of an insulator, and a partially reflecting layer are alternately laminated in this order to form a multi-layered radiation light source, wherein the partially reflecting layer are selected from any one of a free interface, an ultrathin-film metallic layer, and a distributed reflector layer having a structure in which layers having different refractive indexes are alternately laminated. When a material with high-temperature resistance such as SiC is used in the outermost layer of the distributed reflector layer, the multi-layered radiation light source can operate at high temperatures of 550° C. and higher.
    Type: Application
    Filed: May 24, 2019
    Publication date: August 5, 2021
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tadaaki NAGAO, Tung Anh DOAN, Duy Thang DAO, Satoshi ISHII
  • METHOD FOR CLEANING RECEPTOR LAYER OF SURFACE STRESS SENSOR
    Publication number: 20210215556
    Abstract: A method for cleaning a receptor layer of a surface stress sensor according to an embodiment of the present invention includes, in a surface stress sensor that detects a change in surface stress of a thin film, the change being caused by a receptor layer disposed on a surface of the thin film, causing at least a part of a surface region of the thin film to generate heat or supplying heat to the receptor layer from the outside of the surface stress sensor. This makes it possible to easily perform efficient cleaning of a surface stress sensor such as a sensor that performs detection using a piezoresistor while avoiding structural complications as much as possible.
    Type: Application
    Filed: August 28, 2019
    Publication date: July 15, 2021
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Genki YOSHIKAWA, Takahiro NEMOTO, Makito NAKATSU, Naoto TAKEDA, Kota SHIBA, Kosuke MINAMI
  • Wrought processed magnesium-based alloy and method for producing same
    Patent number: 11060173
    Abstract: In order to improve the ductility or formability of a magnesium alloy, addition of rare earth elements or refinement of grain size is often used. However, conventional additional elements inhibit the action of grain boundary sliding for complementing plastic deformation. Therefore, it is required to search for additional elements that act to facilitate the grain boundary sliding not only at a conventional deformation speed but also in a higher speed range while maintaining a microstructure for activating non-basal dislocation. The present invention is to provide a wrought processed Mg-based alloy having excellent ductility at room temperature, which consists of 0.25 mass % or more to 9 mass % or less of Bi, and a balance of Mg and inevitable components, and is characterized by having an average grain size of an Mg parent phase after solution treatment and hot plastic working after casting of 20 ?m or less.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: July 13, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hidetoshi Somekawa, Alok Shingh, Tadanobu Inoue
  • SUSTAINED DRUG RELEASE SHEET FOR TREATING NERVE INJURY
    Publication number: 20210205234
    Abstract: A sustained release sheet that includes a drug for treating nerve injury, wherein the sheet is applied to a nerve injury site, can maintain a high concentration of the drug over a long period, and promotes nerve regeneration without stimulating the nerves, even when the sheet is implanted in the periphery of the nerve injury site. Also provided is a production method for the sheet. This sustained drug release sheet for treating nerve injury is a sheet including a non-woven fabric that is formed from nanofibers each containing a drug such as vitamin B12 and a biocompatible polymer such as a biodegradable aliphatic polyester, and is implanted in the periphery of the nerve injury site to promote nerve regeneration.
    Type: Application
    Filed: February 1, 2021
    Publication date: July 8, 2021
    Applicants: OSAKA UNIVERSITY, NATIONAL INSTITUTE FOR MATERIALS SCIENCE, NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Hiroyuki TANAKA, Kiyoshi OKADA, Hideki YOSHIKAWA, Koji SUZUKI, Mitsuhiro EBARA