Patents Assigned to National Institute of Materials Science
  • Patent number: 11884857
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 30, 2024
    Assignees: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11889762
    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.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: January 30, 2024
    Assignee: National Institute for Materials Science
    Inventors: Yuya Sakuraba, Weinan Zhou, Kenichi Uchida, Kaoru Yamamoto
  • Patent number: 11884856
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 30, 2024
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11879863
    Abstract: The present invention provides a method for analyzing a liquid sample that solves a problem of a kinetically slow equilibrium at a liquid-solid interface, the problem occurring when liquid sample analysis is performed with a chemical sensor. In the method for analyzing a liquid sample according to an embodiment of the present invention, a component to be analyzed in a liquid sample is adsorbed on a receptor layer of a chemical sensor, one or more kinds of gases are then supplied to the chemical sensor, and a response thereof is measured. As a result, since a slow equilibrium at a liquid-solid interface is not used, a high-sensitivity measurement can be performed in a short time, and existing findings regarding analysis of gas samples on which much progress in research has been achieved can be used.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: January 23, 2024
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kosuke Minami, Genki Yoshikawa
  • Publication number: 20240017896
    Abstract: A laminate (10) includes a substrate (11), a sealing layer (12A) disposed on a surface of the substrate (11), and a coating layer (13) disposed on a surface of the substrate (11) opposite to the sealing layer (12A). The coating layer (13) contains a tannic acid derivative in which at least a part of a plurality of hydroxyl groups is substituted with a linear hydrocarbon group having 1 to 18 carbon atoms, and at least one type of resin selected from the group consisting of a urethane resin, an acrylic resin, a vinyl chloride-vinyl acetate copolymer resin, a polyester resin, and an olefin resin.
    Type: Application
    Filed: November 26, 2021
    Publication date: January 18, 2024
    Applicants: National Institute for Materials Science, DIC Corporation
    Inventors: Masanobu Naito, Shin-ichi Ohara, Takashi Tamaoka, Hideoki Iwanami
  • Patent number: 11867567
    Abstract: In a thermo-physical property measurement instrument, a light shield that shields from light except for an aperture is provided facing the front surface of a sample thin film of a sample. Heating light of repeated pulse that is output from a heating laser irradiates the sample thin film through the light shield. Temperature measurement light of continuous light that is output from a temperature measurement laser is applied to a measurement position a predetermined distance away from a heating light irradiation position on the sample thin film. A photodetector detects reflected light of the temperature measurement light off the sample thin film, and a computer acquires a thermo-reflectance signal that was digitally converted by an AD converter. The computer calculates a thermo-physical property value in the in-plane direction of the sample thin film of the sample on the basis of the acquired thermo-reflectance signal.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: January 9, 2024
    Assignees: NETZSCH Japan K.K., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yohei Kakefuda, Susumu Kawakami, Tetsuya Baba, Takao Mori
  • Patent number: 11856664
    Abstract: The present invention is to provide a prevention method and a prevention system for preventing dew condensation and light scattering due to the dew condensation. According to one embodiment of the present invention, a fine liquid droplet capable of causing dew condensation is detected by a detection means for detecting a fine liquid droplet, and then the fine liquid droplet is removed on the basis of the detection. The detection means comprises a first thin wire made of a first metal, and a second thin wire made of a second metal or a semiconductor, the second metal is different from the first metal, the first thin wire and the second thin wire are disposed in juxtaposition with each other on an insulating substrate, and a spacing between the first thin wire and the second thin wire is in a range of 20 nm or more and 10000 nm or less.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: December 26, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin Kawakita, Toyohiro Chikyo
  • Publication number: 20230365844
    Abstract: An adhesive sheet includes cyclodextrin and a derivative polymer in which an alkyl group having a carbon number of 6 to 18 is introduced into a hydrophilic polymer, and at least a part of the alkyl group is in the form of inclusion with the cyclodextrin.
    Type: Application
    Filed: October 4, 2021
    Publication date: November 16, 2023
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Tetsushi TAGUCHI
  • Publication number: 20230371382
    Abstract: Provided is a thermoelectric material which exhibits excellent thermoelectric characteristics at room temperature; a method for producing this thermoelectric material; and a thermoelectric power generation element using this thermoelectric material. In an embodiment of the present invention, a thermoelectric material contains an inorganic compound that contains magnesium (Mg), antimony (Sb) and/or bismuth (Bi), copper (Cu), and if necessary M (M is composed of at least one element that is selected from the group consisting of selenium (Se) and tellurium (Te)); and inorganic compound is represented by MgaSb2-b-cBibMcCud, wherein a, b, c and d satisfy 3?a 3.5, 0?b?2, 0?c?0.06, 0?d?0.1, and (b+1)?2.
    Type: Application
    Filed: August 25, 2021
    Publication date: November 16, 2023
    Applicant: National Institute for Materials Science
    Inventors: Takao Mori, Zihang Liu
  • Patent number: 11804519
    Abstract: A crystalline multilayer structure having a high-quality crystalline layer and a semiconductor device employing such a crystalline multilayer structure are provided. A crystalline multilayer structure, including a first crystalline layer having a first crystal, and a second crystalline layer stacked on the first crystalline layer and having a second crystal, wherein the first crystal includes polycrystalline ?-Ga2O3 and the second crystal is a single crystal of a crystalline oxide.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: October 31, 2023
    Assignees: FLOSFIA INC., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yuichi Oshima, Katsuaki Kawara
  • Patent number: 11796408
    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: Grant
    Filed: August 28, 2019
    Date of Patent: October 24, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Genki Yoshikawa, Takahiro Nemoto, Makito Nakatsu, Naoto Takeda, Kota Shiba, Kosuke Minami
  • Publication number: 20230333032
    Abstract: The sample holder 30 comprises: a holder body 31 for holding the sample 17; an electrolyte introduction chamber 31b provided with an opening 31c that opens to a measurement region 17a of the sample; a retainer plate 33, which is provided with a through-hole 33a corresponding to the measurement region of the sample, for retaining the sample from the electron source side around the through-hole to sandwich the sample airtightly with the holder body; double sealing members 32 arranged between the surface of the holder body and the sample so as to surround the periphery of the measurement region of the sample; a differential exhaust pipe 35, which opens to a space between the sealing members on the surface of the holder body, for exhaust the space through the opening; and electrodes 19 for electrolysis made up of a bias application electrode 19a and an opposing electrode 36.
    Type: Application
    Filed: August 19, 2021
    Publication date: October 19, 2023
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Akiko Nakamura, Taro Yakabe, Naoya Miyauchi
  • Publication number: 20230333023
    Abstract: Provided is to perform an identification of a temperature and/or a material of a target object to be measured in a non-contact and simple manner. A relationship between a wavelength and an emissivity of thermal radiation such as infrared rays radiated from an object is determined by the material of the object. In the present invention, the identification is performed by using this. In other words, the object above can be achieved by comparing thermal radiation intensities at a plurality of wavelengths from the given object with a database in the present invention. The database is stored by measuring the thermal radiation intensities at the plurality of wavelengths and temperatures for a plurality of materials in advance. An external light source is not required, and the target to be measured itself is used as a thermal radiation light source in this measurement.
    Type: Application
    Filed: September 13, 2021
    Publication date: October 19, 2023
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tadaaki NAGAO, Duc Thien NGO, Ryo TAMURA, Tung Anh DOAN
  • Publication number: 20230323198
    Abstract: A wavelength conversion member includes a support, and a wavelength conversion layer that includes a phosphor particle group and a sealing member to seal the phosphor particle group and that is provided directly or through an other layer on the support. A predetermined region, in which a cross-sectional area rate of the phosphor particle group is not less than 50%, is included in an arbitrary cross section of the wavelength conversion layer taken parallel to a thickness direction thereof. The predetermined region includes a rectangular region with a width of 700 ?m and a thickness of 50 ?m from a bottom surface of the wavelength conversion layer when a thickness of the wavelength conversion layer is not less than 50 ?m, or a rectangular region with a width of 700 ?m and a thickness equal to the thickness of the wavelength conversion layer when it is less than 50 ?m.
    Type: Application
    Filed: September 30, 2020
    Publication date: October 12, 2023
    Applicants: TAMURA CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Daisuke INOMATA, Rikiya SUZUKI, Yusuke ARAI, Yoshihiro YAMASHITA, Hiroyuki SAWANO, Kiyoshi SHIMAMURA, Encarnacion Antonia GARCIA VILLORA
  • Publication number: 20230321611
    Abstract: The present invention provides a nonwoven fabric for a separation membrane which can prevent a bleed-through of a resin solution used for coating in a step of producing the separation membrane, can produce a separation membrane having a large permeate flux of a liquid by non-solvent induced phase separation, has high adhesiveness between a coating membrane and the nonwoven fabric, and can make the coating membrane thin, and a method of producing the same. In an exemplary aspect of the present invention, a two-layer nonwoven fabric 10 for a separation membrane is configured to have a surface layer 11 and a back surface layer 12, a coating surface of a coating solution during membrane formation is a surface 11a of the surface layer 11, and, when the nonwoven fabric 10 is impregnated with the coating solution for membrane formation, the surface layer 11 has a large Laplace force and the back surface layer 12 has a small Laplace force.
    Type: Application
    Filed: January 28, 2022
    Publication date: October 12, 2023
    Applicants: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, HIROSE PAPER MFG CO., LTD.
    Inventors: Izumi ICHINOSE, Edhuan BIN ISMAIL, Takako TSUBATA, Masataka SAKAMOTO, Yoshiki MIZUNO
  • Publication number: 20230329115
    Abstract: Provided are a thermoelectric material having excellent thermoelectric characteristics at room temperature; a method for producing same; and a thermoelectric power generation element. In an embodiment of the present invention, the thermoelectric material contains an inorganic compound containing magnesium (Mg), silver (Ag), antimony (Sb) and copper (Cu), and is represented by the formula Mg1?aCuaAgbSbc, and the parameters a, b and c satisfy: 0<a?0.1, 0.95?b?1.05 and 0.95?c?1.05. The inorganic compound may be an a phase of a half-Heusler structure and have the symmetry of the space group I-4c2.
    Type: Application
    Filed: August 25, 2021
    Publication date: October 12, 2023
    Applicant: National Institute for Materials Science
    Inventors: Takao MORI, Zihang LIU
  • Publication number: 20230311212
    Abstract: There is provided a method for manufacturing a turbine component which enables obtaining a single crystal structure more easily and manufacturing a good turbine component. In the seed crystal placing step, the seed crystal is placed on the surface of the base in a manner that a first direction along <001> of the seed crystal has an angle within 15 degrees in absolute value in relation to a laminating direction. In the shaped layer forming step, scanning is performed in a manner that the scan direction has an angle within 20 degrees in absolute value in relation to a second direction being <001> orthogonal to the first direction of the seed crystal.
    Type: Application
    Filed: May 24, 2023
    Publication date: October 5, 2023
    Applicants: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Takehisa HINO, Hiroshi HARADA, Kyoko KAWAGISHI, Toshio OSADA, Tadaharu YOKOKAWA, Yutaka KOIZUMI, Makoto OSAWA, Toru TANAKA, Hideshi NAKANO, Rie SUMIYA, Kazuhiro KITAYAMA, Yoshiaki SAKAI, Akihiro SAKAMOTO
  • Patent number: 11774346
    Abstract: In an analysis of a fluid component using a nanomechanical sensor covered with a receptor, the same receptor is caused to express different response characteristics. In a measuring system of analyzing a response when a sample gas and a purge gas are supplied to a nanomechanical sensor while switching the sample gas and the purge gas, a gas (external gas) different from both gases is mixed into a gas channel and supplied to the sensor for measurement. Since a response characteristic of a receptor is modulated by mixing of the external gas, the object described above is achieved.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: October 3, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kosuke Minami, Gaku Imamura, Kota Shiba, Genki Yoshikawa
  • Patent number: 11767582
    Abstract: The present invention provides a steel material which has a plate shape and achieves both high strength and high rigidity by imparting large nonuniform deformation to the steel material utilizing rolling using a large-diameter work roll.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: September 26, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tadanobu Inoue, Hai Qiu, Rintaro Ueji
  • Publication number: 20230287267
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: March 29, 2023
    Publication date: September 14, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki