Patents Assigned to National Institute for Materials Science
  • Patent number: 12272826
    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 300 m2/g to 1600 m2/g; (b) the total volume of micropores having a diameter of 1 nm to 200 nm is within the range of 1.2 cm3/g to 7.0 cm3/g; (c) the total volume of micropores having a diameter of 1 nm to 1000 nm is within the range of 2.3 cm3/g to 10.0 cm3/g; and (d) the overall porosity is within the range of 80% to 99%.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: April 8, 2025
    Assignee: National Institute for Materials Science
    Inventors: Eiki Yasukawa, Takashi Kameda, Shoichi Matsuda, Shoji Yamaguchi, Shin Kimura, Kimihiko Ito, Yoshimi Kubo
  • Patent number: 12268709
    Abstract: The invention provides a nitrogenous gas sustained releasing agent that is capable of sustainably releasing off nitrogenous gases in the air at normal temperature and safe to handle and a nitrogenous gas sustained releaser composed of the same as well as a nitrogenous gas sustained releasing method, respiratory equipment, a package and a nitrogenous gas sustained releasing apparatus using said sustained releaser. The nitrogenous gas sustained releasing agent contains a layered double hydroxide having nitrite ions (NO2?) and/or nitrate ions (NO3?) included between layers. The nitrogenous gas sustained releaser composed of the sustained releasing agent is exposed to a gas containing carbon dioxide and water vapor to induce any one or more processes of sustained release of nitrous acid, self-decomposition of nitrous acid, oxidization/reduction of nitrous acid, and reduction of nitrite ions/nitrate ions thereby sustainably releasing off nitrogenous gases.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: April 8, 2025
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Shinsuke Ishihara, Nobuo Iyi
  • Publication number: 20250113673
    Abstract: The present invention relates to a light-emitting device having at least one or more light emission colors having a specific correlated color temperature, which includes a light-emitting element including a first luminescent material and a second luminescent material, in which the second luminescent material contains at least one or more phosphors and one or more other phosphors each having an emission peak in a different wavelength region; in at least one of the light emission colors having the specific correlated color temperature, when an emission intensity at a wavelength ?1 where an emission intensity of an emission spectrum is maximum at 600 nm or more and 700 nm or less is A, and an emission intensity at 700 nm is C, C/A is 0.25 or less; and the one or more other phosphors include at least a phosphor containing a crystal phase having a specified composition.
    Type: Application
    Filed: December 6, 2024
    Publication date: April 3, 2025
    Applicants: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Yuhei Inata, Tomoyuki Kurushima, Naoto Hirosaki
  • Publication number: 20250107316
    Abstract: The present invention relates to a light-emitting device including a first luminescent material and a second luminescent material which emits visible light by irradiation with light from the first luminescent material, in which the second luminescent material contains at least a red phosphor which satisfies the following (A) and (B): (A) An emission spectrum has at least one emission peak having a full width at half maximum (FWHM) of 20 nm or more and 65 nm or less, and (B) Chromaticity coordinates of a light emission color are present between two straight lines represented by the following equation (a) and equation (b) based on coordinates represented by (x, y) in a CIE 1931 chromaticity coordinate system: (a) y=0.992?x, (b) y=1.000?x, and 0.290?y?0.350, an illumination device, an image display device, and an indicator lamp for a vehicle.
    Type: Application
    Filed: December 6, 2024
    Publication date: March 27, 2025
    Applicants: Mitsubishi Chemical Corporation, National Institute For Materials Science
    Inventors: Yuhei Inata, Tomoyuki Kurushima, Naoto Hirosaki
  • Patent number: 12252824
    Abstract: A non-woven fabric including fibers including an aliphatic polyester that has at least two maximum values in a molecular weight distribution thereof, wherein the fibers have a fiber diameter falling within the range of 100 to 3000 nm. The non-woven fabric of the present invention has excellent biodegradability.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: March 18, 2025
    Assignees: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Koichiro Uto, Mitsuhiro Ebara, Mitsuru Naiki, Takafumi Konishi, Hitoshi Yamamoto
  • Patent number: 12246033
    Abstract: The invention provides a constituent that is used with a novel method for preventing and/or treating skin wounds and ensures stable delivery of low-concentration hydrogen sulfide to a wound site. The skin wound-preventing and/or treating constituent includes a sustained hydrogen sulfide releasing agent that is preferably a layered double hydroxide having HS— and/or Sk2- between layers where k is a positive integer.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: March 11, 2025
    Assignees: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, SUMITOMO SEIKA CHEMICALS CO., LTD., UNIVERSITY OF THE RYUKYUS
    Inventors: Shinsuke Ishihara, Nobuo Iyi, Shigeki Sakaue, Manabu Kakinohana
  • Patent number: 12247297
    Abstract: The present invention provides: a multilayer film structure which has high crystallinity and planarity; and a method for producing this multilayer film structure. This multilayer film structure is provided with: an Si (111) substrate; a first thin film that is arranged on the Si (111) substrate, while being formed of a nitride material and/or aluminum; and a second thin film that is arranged on the first thin film, while being formed of a nitride material. An amorphous layer having a thickness of 0 nm or more but less than 1.0 nm are present on the Si (111) substrate; and the full width at half maximum (FWHM) of a rocking curve of the (0002) plane at the surface of this multilayer film structure is 1.50° or less.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: March 11, 2025
    Assignees: TOSOH CORPORATION, National Institute for Materials Science
    Inventors: Yuya Tsuchida, Yuya Suemoto, Yoshihiro Ueoka, Masami Mesuda, Hideto Kuramochi, Takahiro Nagata, Liwen Sang, Toyohiro Chikyow
  • Patent number: 12250885
    Abstract: A thermoelectric conversion element (100) of the present invention includes a first electrode (105) which has one side joined to a first surface (101a) of an n-type semiconductor via an n-side junction layer (102), and the other side joined to a first surface (103a) of a p-type semiconductor via a p-side junction layer (104), and a second electrode (106) which is joined to each of a second surface (101b) of the n-type semiconductor and a second surface (103b) of the p-type semiconductor via the n-side junction layer (102) and the p-side junction layer (104). Each of the n-type semiconductor (101) and the p-type semiconductor (103) has a composition represented by Formulas (1) and (2) below, and the n-side junction layer (102) and the p-side junction layer (104) include Al. Mg2SiaSn1-a+A??(1) MgmSixSnyGez+B??(2).
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: March 11, 2025
    Assignees: Mitsuba Corporation, National Institute for Materials Science
    Inventors: Satoki Tada, Yukihiro Isoda
  • Patent number: 12237141
    Abstract: The purpose of the present invention, relating to lanthanide boride, which is known as a low work function material, is to provide a novel low work function material with low chemical reactivity, in particular a low work function material of which the material surface, after being exposed to atmospheric gases, can be cleaned at a heating temperature lower than in the prior art. The present invention is a laminate containing a lanthanide boride film formed on a substrate, the surface of said film being covered by a thin film, wherein the thin film is a monatomic layer of a hexagonal boron nitride thin film.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: February 25, 2025
    Assignee: National Institute for Materials Science
    Inventors: Katsumi Nagaoka, Takashi Aizawa, Shun-Ichiro Ohmi
  • Publication number: 20250054664
    Abstract: This hot-deformed R—Fe—B magnet for a variable-magnetic-force motor is an R2—Fe14—B (R is at least one rare earth element selected from among Nd, La, Ce, and Y)-based hot-deformed magnet, including, in atom %, 12.2% or more and 14.5% or less of R2(Nd1-x-y-zLaxCeyYz), where (0.0?x?0.2, 0.0?y+z?0.3), 5% or more and 6.5% or less of B, 0.0% or more and 5.0 or less of Co, and 0.0% or more and 1.0 or less of Ga, with the balance being made up of Fe and inevitable impurities.
    Type: Application
    Filed: December 12, 2022
    Publication date: February 13, 2025
    Applicant: National Institute for Materials Science
    Inventors: Xin TANG, Hossein SEPEHRI AMIN, Tadakatsu OHKUBO, Kazuhiro HONO
  • Patent number: 12180402
    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: Grant
    Filed: March 31, 2020
    Date of Patent: December 31, 2024
    Assignee: National Institute for Materials Science
    Inventors: Naoto Hirosaki, Takashi Takeda, Shiro Funahashi
  • Publication number: 20240428965
    Abstract: The purpose of the present invention is to provide a niobium-aluminum precursor wire having properties such as expression of flexibility and ensuring a large single-wire length, as well as a twisted wire, a superconducting wire, and a superconducting twisted wire formed of the niobium-aluminum precursor wire. The present invention provides a niobium-aluminum precursor wire and a twisted wire using the same, the niobium-aluminum precursor wire including: a rod-like winding core (5) formed of a stabilized copper, or a stabilized copper and an unstabilized copper; a laminated body (3) that is wound around the winding core (5) and that is formed of an aluminum foil and a niobium foil laminated one on the other; and a covering body (1) that covers the circumference of the laminated body and that is formed of a stabilized copper, or a stabilized copper and an unstabilized copper. The volume ratio of the stabilized copper with respect to the unstabilized copper contained in the precursor wire is 0.5-2.
    Type: Application
    Filed: September 6, 2022
    Publication date: December 26, 2024
    Applicants: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Japan Superconductivity Application Development Inc.
    Inventors: Akihiro KIKUCHI, Yasuo IIJIMA, Masaru YAMAMOTO, Masatoshi KAWANO, Masato OTSUBO
  • Patent number: 12171810
    Abstract: The present invention addresses the problem of providing an angiogenesis promoter capable of exerting an excellent angiogenesis promoting effect without containing any growth factor. The present invention also addresses the problem of providing a therapeutic method. An angiogenesis promoter that comprises as an active ingredient at least one member selected from the group consisting of a gelatin derivative represented by formula 1 and a crosslinked product of the gelatin derivative: In formula 1: Gltn represents a gelatin residue; L represents a single bond or a divalent linking group; and R1 and R2 independently represent a hydrocarbon group having 1-20 carbon atoms or a hydrogen atom, provided that at least one of R1 and R2 represents the aforesaid hydrocarbon group.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: December 24, 2024
    Assignee: National Institute for Materials Science
    Inventor: Tetsushi Taguchi
  • Publication number: 20240395494
    Abstract: The purpose of the present invention, relating to lanthanide boride, which is known as a low work function material, is to provide a novel low work function material with low chemical reactivity, in particular a low work function material of which the material surface, after being exposed to atmospheric gases, can be cleaned at a heating temperature lower than in the prior art. The present invention is a laminate containing a lanthanide boride film formed on a substrate, the surface of said film being covered by a thin film, wherein the thin film is a monatomic layer of a hexagonal boron nitride thin film.
    Type: Application
    Filed: September 20, 2022
    Publication date: November 28, 2024
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Katsumi NAGAOKA, Takashi AIZAWA, Shun-ichiro OHMI
  • Publication number: 20240384167
    Abstract: A phosphor includes a crystal phase having a composition represented by RexMAaMBbMCcDdXe, in which MA includes at least one of Ca, Sr, Ba, Na, K, Y, Gd, or La, MB includes at least one of Li, Mg, or Zn, MC includes at least one of Al, Si, Ga, In, or Sc, D is N (nitrogen) and/or O (oxygen), X includes at least one of F, Cl, Br, or I, Re includes at least one of Eu, Ce, Pr, Tb, or Dy, and a, b, c, d, e, and x satisfy the specific expressions, respectively. In the phosphor, when a content of B (boron) is designated as b (mass ppm), a value of Log10(b) is 3.5 or less.
    Type: Application
    Filed: July 29, 2024
    Publication date: November 21, 2024
    Applicants: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Kyota Ueda, Tomoyuki Kurushima, Atsushi Ooishi, Naoto Hirosaki
  • Publication number: 20240384166
    Abstract: A phosphor contains a crystal phase having a composition represented by RexMAaMBbMCcDdXe, and an element Z, in which a content of the element Z is 1,000 mass ppm or less, and the element Z includes at least one of Mo, W, Nb, Ta, Ni, Pt, or Ir. Regarding the composition, MA includes at least one of Ca, Sr, Ba, Na, K, Y, Gd, or La, MB includes at least one of Li, Mg, or Zn, MC includes at least one of Al, Si, Ga, In, or Sc, D is N (nitrogen) and/or O (oxygen), X includes at least one of F, Cl, Br, or I, and Re includes at least one of Eu, Ce, Pr, Tb, or Dy, and a, b, c, d, e, and x satisfy the specific expressions, respectively.
    Type: Application
    Filed: July 29, 2024
    Publication date: November 21, 2024
    Applicants: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Kyota Ueda, Tomoyuki Kurushima, Atsushi Ooishi, Naoto Hirosaki
  • Patent number: 12146850
    Abstract: A detection apparatus includes: an electrode formation unit that is brought into contact with an object to form an electrode; a detection unit that constitutes an electrode pair with the electrode; a measurement unit that measures a current flowing between the electrode and the detection unit; and a determination unit that determines presence or absence of an abnormality related to bacteria attached to the object according to the current measured by the measurement unit.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: November 19, 2024
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventor: Akihiro Okamoto
  • Patent number: 12142888
    Abstract: A joined body (10) includes an optical material (11) and a cooling material (12) that are capable of transmitting light and are joined together. At a joining interface between the optical material (11) and the cooling material (12), the joined body (10) is capable of transmitting light, and also an atom contained in the optical material (11) diffusively enters the cooling material (12) in such a degree that an interference fringe is not generated in the joined body (10). A diffusive entry length of an atom contained in the optical material (11) into the cooling material (12) may be in a range from approximately 1.0 nm to approximately 10 ?m.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: November 12, 2024
    Assignees: National Institute for Materials Science, Inter-University Research Institute Corporation National Institutes of Natural Sciences
    Inventors: Hiroaki Furuse, Yuki Koike, Ryo Yasuhara
  • Patent number: 12130270
    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: Grant
    Filed: May 8, 2020
    Date of Patent: October 29, 2024
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Gaku Imamura, Kosuke Minami, Kota Shiba, Genki Yoshikawa
  • Publication number: 20240347306
    Abstract: A manufacturing method for an electron source according to the present disclosure includes steps of: (A) cutting out a chip from a block of an electron emission material, (B) fixing a first end portion of the chip to a distal end of a support needle, and (C) sharpening a second end portion of the chip. The step (A) includes forming first and second grooves which constitute first and second surfaces of the chip in the block by irradiating a surface of the block with an ion beam. The first end portion of the chip includes the first surface and the second surface with the surfaces forming an angle ? of 10 to 90°. The step (B) includes forming a joint between the distal end of the support needle and the first end portion of the chip.
    Type: Application
    Filed: June 23, 2022
    Publication date: October 17, 2024
    Applicants: Denka Company Limited, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiromitsu CHATANI, Daisuke ISHIKAWA, Jie TANG, Tadakatsu OHKUBO, Shuai TANG, Jun UZUHASHI, Kazuhiro HONO