Patents Assigned to National Institute for Materials Science
  • 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
  • Publication number: 20230273183
    Abstract: An object of the present invention is to make it possible to easily determine a presence or absence of ketosis and/or the possibility of ketosis in an animal on site or the like. Another object of the present invention is to provide an apparatus for performing the determination. A method for determining ketosis according to one embodiment of the present invention includes providing gas detection means with a gas generated from a body fluid collected from an animal (except for humans), and determining ketosis of the animal based on a composition of the gas generated from the body fluid using a response of the gas detection means to the gas generated from the body fluid.
    Type: Application
    Filed: July 12, 2021
    Publication date: August 31, 2023
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Ryoh NAKAKUBO, Mitsuyoshi ISHIDA, Genki YOSHIKAWA, Kosuke MINAMI, Gaku IMAMURA, Hideki MATSUZAKA, Takahiro NEMOTO
  • Patent number: 11739400
    Abstract: A magnesium alloy of the present invention has a structure, comprising: 0.5-2.0 wt % of Zn; 0.3-0.8 wt % of Ca; at least 0.2 wt % of Zr; and the remainder comprising Mg and unavoidable impurities, wherein a nanometer-sized precipitate comprising Mg, Ca and Zn dispersed on the (0001) plane of a magnesium matrix, thereby achieving both formability and strength in a range of temperatures including room temperature.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: August 29, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Ming-Zhe Bian, Taisuke Sasaki, Kazuhiro Hono, Shigeharu Kamado, Taiki Nakata
  • Patent number: 11740198
    Abstract: [Object] To provide a formaldehyde detecting sensor capable of constantly monitoring formaldehyde selectively and with high accuracy. [Solving Means] A formaldehyde detecting sensor according to the present invention includes: a reaction portion that contains at least a hydroxylamine salt and reacts with formaldehyde to generate an acid; and a response unit that includes an electrode carrying a carbon material, an electrical resistance value of the carbon material varying depending on the acid generated in the reaction portion, in which the hydroxylamine salt and the carbon material are separated from each other.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 29, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Shinsuke Ishihara, Jan Labuta, Takashi Nakanishi
  • Publication number: 20230250334
    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 30, 2023
    Publication date: August 10, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei INATA, Naoto HIROSAKI
  • Patent number: 11721516
    Abstract: The purpose of the present invention is to provide an emitter capable of easily and highly efficiently emitting electrons, an electron gun using same, and an electronic device. This emitter is provided with a cathode holder, and an acicular substance secured to the cathode holder. An end, to which the acicular substance is secured, of the cathode holder is bent at ? (?(°) satisfies 5<??70) that is an angle formed with respect to a cathode axis being the longitudinal direction of the cathode holder, the acicular substance is a single crystal nanowire or nanotube, and a relation L/T between the thickness T (?m) of the end of the cathode holder and a length L (?m) by which the acicular substance protrudes from the end satisfies 0.3?L/T?2.5.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: August 8, 2023
    Assignee: National Institute for Materials Science
    Inventors: Han Zhang, Jie Tang, Daisuke Fujita, Yasushi Yamauchi, Luchang Qin
  • Publication number: 20230242813
    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: Application
    Filed: March 30, 2023
    Publication date: August 3, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
  • Publication number: 20230235221
    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: Application
    Filed: March 30, 2023
    Publication date: July 27, 2023
    Applicants: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11706986
    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: Grant
    Filed: October 5, 2017
    Date of Patent: July 18, 2023
    Assignees: Mitsuba Corporation, National Institute for Materials Science
    Inventors: Satoki Tada, Yukihiro Isoda
  • Publication number: 20230221268
    Abstract: The observation device comprises: a scanning electron microscope for detecting secondary electrons generated by irradiating the sample with an electron beam within the analysis chamber; a sample holder having a cell for housing the observation target gas, an open window of the cell, and a sample mounting part to which the sample can be mounted so as to block the open window; and an observation target ion detecting unit for irradiating the front surface of the sample with an electron beam in a state where the observation target gas in the cell contacts the back surface of the sample and detecting observation target ions derived from the observation target gas generated by the electron beam. In a state where the observation target gas is housed in the cell and the sample is mounted to the sample mounting part of the sample holder, the entire hydrogen cell can be sealed.
    Type: Application
    Filed: April 28, 2021
    Publication date: July 13, 2023
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Akiko Nakamura, Yoshiharu Murase, Naoya Miyauchi, Taro Yakabe
  • Patent number: 11697765
    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: June 29, 2021
    Date of Patent: July 11, 2023
    Assignees: MITSUBISHI CHEMICAL CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE, NICHIA CORPORATION, CITIZEN ELECTRONICS CO., LTD.
    Inventors: Naoto Hirosaki, Kyota Ueda, Hajime Yamamoto
  • Patent number: 11692256
    Abstract: Adding multiple solute elements could create fracture origin through formation of intermetallic compound due to bonding of added elements. While maintaining microstructure for activating non-basal dislocation movement, additive elements not to create fracture origin, but to promote grain boundary sliding are preferably found from among inexpensive and versatile elements. Provided is Mg-based wrought alloy material including two or more among group consisting of Mn, Zr, Bi, and Sn; and Mg and unavoidable constituents, having excellent room-temperature ductility and characterized by having finer crystal grain size in Mg parent phase during room-temperature deformation and in that mean grain size in matrix thereof is 20 ?m or smaller; rate of (?max??bk)/?max (maximum load stress (?max), breaking stress (?bk)) in stress-strain curve obtained by tension-compression test of the wrought material is 0.2 or higher; and resistance against breakage shows 200 kJ or higher.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: July 4, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hidetoshi Somekawa, Yoshiaki Osawa
  • Publication number: 20230203711
    Abstract: Provided are: a GaN crystal used in a substrate for a nitride semiconductor device having a horizontal device structure, such as a GaN-HEMT; and a GaN substrate used for the production of a nitride semiconductor device having a horizontal device structure, such as a GaN-HEMT. The GaN crystal and the GaN substrate each include a surface having an inclination of 10° or less from a (0001) crystal plane and an area of 5 cm2 or more, and have an Mn concentration of 1.0 × 1016 atoms/cm3 or higher but lower than 1.0 × 1019 atoms/cm3 and a total donor impurity concentration of lower than 5.0 × 1016 atoms/cm3.
    Type: Application
    Filed: February 21, 2023
    Publication date: June 29, 2023
    Applicants: MITSUBISHI CHEMICAL CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yusuke TSUKADA, Yuichi Oshima, Yuuki Enatsu
  • Patent number: 11661549
    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: September 13, 2022
    Date of Patent: May 30, 2023
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11655416
    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: Grant
    Filed: September 13, 2022
    Date of Patent: May 23, 2023
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Publication number: 20230147626
    Abstract: An object of the present invention is to make it possible to easily evaluate silage fermentation quality on site or the like. In one embodiment of the present invention, a gas generated from silage is applied to a surface stress sensor, and the amount of either one of organic acids and nitrogen-containing compounds contained in the silage is determined. The surface stress sensor can detect trace components in a gas by a simple device configuration and in simple procedures. Therefore, by utilizing the fact that relationship between the content of these components and the fermentation quality is known, the evaluation of fermentation quality can be easily realized by the above measurement.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 11, 2023
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Ryo NAKAKUBO, Mitsuyoshi ISHIDA, Masanori TOHNO, Hisami KOBAYASHI, Genki YOSHIKAWA, Kosuke MINAMI, Gaku IMAMURA, Hideki MATSUZAKA, Takahiro NEMOTO
  • Patent number: 11641009
    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: Grant
    Filed: June 12, 2019
    Date of Patent: May 2, 2023
    Assignees: 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
  • Publication number: 20230127466
    Abstract: The device for observing permeation and diffusion path of observation target gas includes: a scanning electron microscope 15; an observation target ion detecting unit 20; an observation target gas supply unit 19; a diaphragm-type sample holder 12, to which the sample is mounted in attachable/detachable state, as a diaphragm dividing between the analysis chamber 11 and the observation target gas pipe 14; and a control unit 50. The control unit acquires a SEM image and at the same time detects the observation target gas, which diffuses within the sample and is discharged to the surface of the sample, by electron stimulated desorption, in a state where stress is applied to the sample due to differential pressure generated between the analysis chamber and the observation target gas pipe by supplying the observation target gas, and obtains an ESD image of the observation target ions.
    Type: Application
    Filed: February 25, 2021
    Publication date: April 27, 2023
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Akiko Nakamura, Yoshiharu Murase, Hideaki Nishikawa, Taro Yakabe, Naoya Miyauchi
  • Patent number: 11634617
    Abstract: The present invention has for its object to provide an adhesive composition that is based on a naturally occurring material less likely to have adverse influences on the human body and has a tensile shear strength (adhesive strength) of at least 1 MPa with respect to a variety of adherends. The present invention provides an adhesive composition including at least a first pack and a second pack, wherein the first pack contains a tannic acid derivative in which a hydrogen atom in at least some hydroxyl group of tannic acid is substituted by a chain hydrocarbon group having at least one hydroxyl group, and the second pack contains a hydrocarbon having at least two cyanate groups or a derivative of the hydrocarbon.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 25, 2023
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Masanobu Naito, Sandip Das, Debabrata Payra