Patents Assigned to National Institute for Materials Science
  • Publication number: 20220387662
    Abstract: The present invention provides a biological tissue adhesive sheet having excellent tissue adhesiveness. The biological tissue adhesive sheet according to an embodiment of the present invention includes a nonwoven fabric made of fibers containing a crosslinked cold-water fish gelatin. Thereby, the biological tissue adhesive sheet according to the present invention is superior in tissue adhesiveness and film strength to conventional medical sheets.
    Type: Application
    Filed: September 10, 2020
    Publication date: December 8, 2022
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Tetsushi TAGUCHI
  • Patent number: 11521645
    Abstract: The present disclosure provides: a magnetoresistive element having a large magnetoresistance change ratio (MR ratio); and a magnetic sensor, a reproducing head and a magnetic recording and reproducing device. The magnetoresistive element comprises a magnetoresistive film including a pair of body centered cubic (bcc) crystal structure CoFe ferromagnetic layers with a (001) crystal orientation, the pair of layers separated by a non-magnetic layer of Cu with bcc crystal structure.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: December 6, 2022
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kresna Bondan Fathoni, Yuya Sakuraba, Taisuke Sasaki, Tomoya Nakatani, Yoshio Miura, Kazuhiro Hono
  • Patent number: 11513410
    Abstract: The present invention is an electrochromic device which is provided with a first electrode; an electrochromic layer which is disposed on the first electrode, while containing an organic/metal hybrid polymer that contains at least an organic ligand and a metal ion to which the organic ligand is coordinated; an electrolyte layer which is disposed on the electrochromic layer; a counter electrode material layer which is disposed on the electrolyte layer and contains a conductive polymer; and a second electrode which is disposed on the counter electrode material layer. The conductive polymer may be at least one polymer that is selected from the group consisting of polypyrroles, polyanilines, polythiophenes, poly(p-phenylene)s, poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate)s (PEDOT:PSS), polyfluorenes, poly(p-phenylenevinylene)s, polythienylenevinylenes and organic/metal hybrid polymers.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: November 29, 2022
    Assignee: National Institute for Materials Science
    Inventors: Masayoshi Higuchi, Yuki Seino
  • Patent number: 11486843
    Abstract: The present invention is to provide a small-sized dryness/wetness responsive sensor that detects a galvanic current with a high sensitivity as a principle of operation. According to one embodiment of the present invention, a dryness/wetness responsive sensor comprises a thin wire made of a first metal and a thin wire made of a second metal, the second metal is different from the first metal, the thin wire of the first metal and the thin wire of the second metal are disposed in juxtaposition with each other on an insulating substrate, and a surface state of a part between the thin wire of the first metal and the thin wire of the second metal is hydrophilic or hydrophobic.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: November 1, 2022
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin Kawakita, Akihiko Ohi, Tomoko Ohki, Naoki Ikeda, Toshihide Nabatame, Toyohiro Chikyo
  • Publication number: 20220331477
    Abstract: The present invention provides a biological tissue adhesive sheet having excellent tissue adhesiveness. The biological tissue adhesive sheet according to an embodiment of the present invention includes a nonwoven fabric made of fibers containing a crosslinked gelatin derivative, and the gelatin derivative is represented by Formula 1: Gltn-NH-L-CHR1R2, wherein Gltn represents a gelatin residue, L represents a single bond or a divalent linking group, R1 and R2 are each independently a hydrocarbon group having 1 to 20 carbon atoms or a hydrogen atom, and at least one selected from the group consisting of R1 and R2 is the hydrocarbon group.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 20, 2022
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Tetsushi TAGUCHI
  • Patent number: 11476017
    Abstract: In the production of an internal-tin-processed Nb3Sn superconducting wire, the present invention provides a Nb3Sn superconducting wire that is abundant in functionality, such as, the promotion of formation of a Nb3Sn layer, the mechanical strength of the superconducting filament (and an increase in interface resistance), the higher critical temperature (magnetic field), and the grain size reduction, and a method for producing it. A method for producing a Nb3Sn superconducting wire according to an embodiment of the present invention includes a step of providing a bar 10 that has a Sn insertion hole 12 provided in a central portion of the bar 10 and a plurality of Nb insertion holes 14 provided discretely along an outer peripheral surface of the Sn insertion hole 12, and that has an alloy composition being Cu-xZn-yM (x: 0.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: October 18, 2022
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Nobuya Banno, Kyoji Tachikawa
  • Publication number: 20220306484
    Abstract: Single crystals of a new noncentrosymmetric polar oxysulfide SrZn2S2O (s.g. Pmn21) grown in a eutectic KF-KCl flux with unusual wurtzite-like slabs consisting of close-packed corrugated double layers of ZnS3O tetrahedra vertically separated from each other by Sr atoms and methods of making same.
    Type: Application
    Filed: June 10, 2022
    Publication date: September 29, 2022
    Applicants: University of South Carolina, National Institute For Materials Science
    Inventors: Hans-Conrad Zur Loye, Yoshihiro Tsujimoto
  • Patent number: 11454858
    Abstract: An optical deflector includes: a light transmitting portion through which a light passes; and a pair of electrodes arranged to oppose to each other with the light transmitting portion interposed therebetween. The light transmitting portion is a transparent ion conductor made of a single crystal or polycrystal. The pair of electrodes apply a predetermined voltage to the light transmitting portion to move ions inside the transparent ion conductor so as to change a traveling direction of the light passing through the light transmitting portion.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: September 27, 2022
    Assignees: DENSO CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yosuke Suzuki, Tadaaki Nagao, Akio Watanabe
  • Patent number: 11454603
    Abstract: The purpose of the present invention is to realize a dew point measurement in which the generation of dew condensation is directly detected and the detection can be performed without using any optical system. In particular, the purpose of the present invention is to realize a dew point measuring device that is compact and has a high sensitivity. According to one embodiment of the present invention, a sudden change in current values before and after the dew point is detected by detecting the dew condensation to detect a galvanic current that flows due to a water droplet attached onto a surface of an insulating substrate on which thin wires of dissimilar metals are juxtaposed, and by controlling the temperature on the surface of the substrate. In this way, the dew point measurement in which the dew point can be directly measured and a measurement with simple configuration and high accuracy can be performed can be realized.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: September 27, 2022
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin Kawakita, Toyohiro Chikyo
  • Patent number: 11449552
    Abstract: Provided is a search system that executes a path search in a graph (a material property relationship graph) in which each material property parameter of a material property parameter pair whose relationship is already known is node and a relationship between the material property parameters is an edge, the search method capable of executing various search methods and various search systems. The search system includes a graph searcher that executes a path search in a material property relationship graph, and a search condition extractor that supplies a plurality of search items to the graph searcher based on search conditions to be input. The search condition extractor extracts, based on the input search conditions, a start point or an end point or both a start point and an end point, and a third node different from the start point and the end point or a path length condition and supplies the extracted items to the graph searcher as a search item.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: September 20, 2022
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Michiko Yoshitake
  • Publication number: 20220291185
    Abstract: An object of the present invention is to detect ammonia with high sensitivity and high selectivity using a nanomechanical sensor with a structure that is as simple as possible. A method for detecting ammonia according to an embodiment of the present invention comprises supplying a sample gas possibly containing ammonia to a nanomechanical sensor that detects a stress or a displacement using poly(methyl vinyl ether-alt-maleic anhydride) as a material of a receptor layer, and detecting presence or absence of ammonia or a content of ammonia in the sample gas based on an output signal from the nanomechanical sensor, in which the sample gas is a humidified sample gas with controlled relative humidity.
    Type: Application
    Filed: May 8, 2020
    Publication date: September 15, 2022
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Gaku IMAMURA, Kosuke MINAMI, Kota SHIBA, Genki YOSHIKAWA
  • Patent number: 11442051
    Abstract: Provided is a novel analysis method which, when a chemical sensor is used to perform a measurement, makes it possible to identify a sample without controlling or monitoring a change in the time the sample is introduced. According to the present invention, a sample can be identified without knowing a change in the time the sample is introduced, by using a chemical sensor having a plurality of channels each having different characteristics to perform a measurement, and performing an analysis on the basis of responses obtained from each channel.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: September 13, 2022
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Gaku Imamura, Genki Yoshikawa, Takashi Washio
  • Publication number: 20220283249
    Abstract: According to one embodiment, a magnetic sensor includes a first sensor part. The first sensor part includes a first magnetic member, a first counter magnetic member, and a first magnetic element including one or a plurality of first extension parts. The first extension part includes a first magnetic layer, a first counter magnetic layer, and a first nonmagnetic layer. The first magnetic layer includes a first portion, a first counter portion, and a first middle portion. The first middle portion is between the first portion and the first counter portion. The first nonmagnetic layer is between the first counter magnetic layer and at least a portion of the first middle portion. An electrical resistance of the first magnetic element has first to third values when first to third magnetic fields are applied to the first magnetic element. The first value is greater than the second and third values.
    Type: Application
    Filed: December 22, 2021
    Publication date: September 8, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hitoshi IWASAKI, Satoshi SHIROTORI, Akira KIKITSU, Yoshihiro HIGASHI, Tomoya NAKATANI
  • Publication number: 20220282151
    Abstract: A wavelength conversion member includes a sintered body of a phosphor. An average diameter of pores in an arbitrary cross section falls within a range of not less than 0.28 ?m and not more than 0.98 ?m. A ratio of an area of pores to a whole area in an arbitrary cross section falls within a range of not less than 0.04% and not more than 2.7%. An average diameter of grains of the phosphor in an arbitrary cross section falls within a range of not less than 1 ?m and not more than 3 ?m.
    Type: Application
    Filed: August 7, 2020
    Publication date: September 8, 2022
    Applicants: TAMURA CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yusuke ARAI, Hiroyuki SAWANO, Daisuke INOMATA, Yoshihiro YAMASHITA, Rikiya SUZUKI, Kiyoshi SHIMAMURA, Encarnacion Antonia GARCIA VILLORA
  • Publication number: 20220268494
    Abstract: This magnetic refrigeration module includes a magnetic refrigeration operation unit which has a magnetic refrigeration material, and extends in a longitudinal direction, and a fixed magnetic field excitation unit and a variable magnetic field excitation unit which are disposed apart from each other in an outer peripheral direction of the magnetic refrigeration operation unit, in which the fixed magnetic field excitation unit applies a fixed magnetic field to the magnetic refrigeration operation unit, and the variable magnetic field excitation unit applies a variable magnetic field to the magnetic refrigeration operation unit when being in an ON state and does not apply the variable magnetic field to the magnetic refrigeration operation unit when being in an OFF state.
    Type: Application
    Filed: July 13, 2020
    Publication date: August 25, 2022
    Applicant: National Institute for Materials Science
    Inventors: Hiroaki MAMIYA, Noriki TERADA
  • Patent number: 11417491
    Abstract: The purpose of the present invention is to provide an emitter that is made of hafnium carbide (HfC) and that releases electrons in a stable and highly efficient manner, a method for manufacturing the emitter, and an electron gun and electronic device in which the emitter is used. In this nanowire equipped emitter, the nanowires are made of hafnium carbide (HfC) single crystal, the longitudinal direction of the nanowires match the <100> crystal direction of the hafnium carbide single crystal, and the end part of the nanowires through which electrons are to be released comprise the (200) face and the {310} face of the hafnium carbide single crystal, with the (200) face being the center and the {311} faces surrounding the (200) face.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: August 16, 2022
    Assignee: National Institute for Materials Science
    Inventors: Jie Tang, Jinshi Yuan, Luchang Qin
  • Publication number: 20220255085
    Abstract: The present invention addresses the problem of providing: a porous carbon structure that has a high micropore volume and can be self-contained; a manufacturing method therefor; a positive electrode material using the same; and a battery (particularly an air battery) using the same. The present invention is a porous carbon structure that is for a positive electrode for an air battery and has voids and a skeleton formed by incorporating carbon, the porous carbon structure satisfying all of the following conditions (a) to (d). (a) The t-plot external specific surface area is within the range of 300m2/g to 1600m2/g; (b) the total volume of micropores having a diameter of lnm to 200 nm is within the range of 1.2 cm3/g to 7.0cm3/g; (c) the total volume of micropores having a diameter of lnm to 1000 nm is within the range of 2.3cm3/g to 10.0 cm3/g; and (d) the overall porosity is within the range of 80% to 99%.
    Type: Application
    Filed: May 21, 2020
    Publication date: August 11, 2022
    Applicant: National Institute for Materials Science
    Inventors: Eiki Yasukawa, Takashi Kameda, Shoichi Matsuda, Shoji Yamaguchi, Shin Kimura, Kimihiko Ito, Yoshimi Kubo
  • Patent number: 11407646
    Abstract: The purpose of the present invention is to provide a method for synthesizing ammonia and an apparatus for the method. The method for synthesizing ammonia according to the present invention comprises: a step of melting a metal containing at least an alkali metal; and a step of supplying a hydrogen gas and a nitrogen gas to the molten metal.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: August 9, 2022
    Assignee: National Institute for Materials Science
    Inventors: Fumio Kawamura, Takashi Taniguchi
  • Publication number: 20220243126
    Abstract: Provided are a new phosphor having emission characteristics different from the conventional nitride or oxynitride phosphor, a manufacturing method, and a light-emitting device. In an embodiment, the phosphor may include inorganic substance having crystal represented by A26(D, E)51X86 including at least A, D, X (A is at least one kind of element selected from Mg, Ca, Sr, and Ba; and D is Si, and X is at least one kind of element selected from O, N, and F); and further includes, if necessary, E (E is at least one kind of element selected from B, Al, Ga, and In) wherein the crystal further includes M (M is at least one kind of element selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb). Upon irradiation of excitation source, the maximum value of emission peak in a wavelength range from 630 nm to 850 nm may occur.
    Type: Application
    Filed: March 31, 2020
    Publication date: August 4, 2022
    Applicant: National Institute for Materials Science
    Inventors: Naoto HIROSAKI, Takashi TAKEDA, Shiro FUNAHASHI
  • Publication number: 20220228971
    Abstract: The present invention provides a nanomechanical sensor unsusceptible to water vapor, due to very low sensitivity to water vapor, that may interfere with measurement. In an embodiment of the present invention, as a sensitive film material of a nanomechanical sensor such as a surface stress sensor, poly(2,6-diphenyl-p-phenylene oxide) is utilized that is used for adsorption/concentration of a substance present in a trace amount in water or air, and represented by Formula (1) wherein n represents an integer of 1 or more. As can be seen from graphs showing changes over time of response signals in a case where a gas to be measured containing acetone, ethanol, and the like and nitrogen are alternately supplied to the surface stress sensor cyclically, it was confirmed that in the sensitive film of the present invention, adsorption/desorption of the components in the gas to be measured significantly occurs in response to the cyclic change, but the sensitivity to water is very low.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 21, 2022
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Genki YOSHIKAWA, Kota SHIBA