Patents Assigned to Toshiba Materials Co., Ltd.
  • Publication number: 20220172875
    Abstract: A magnetic ribbon according to an embodiment has a crystallinity degree of 0.05 or higher and 0.4 or lower when the magnetic ribbon is subjected to XRD analysis, the magnetic ribbon being Fe—Nb—Cu—Si—B-base, and the crystallinity degree being expressed by “a peak total area of a crystalline phase”/(“a peak area of an amorphous phase”+“the peak total area of the crystalline phase”). Also, the magnetic ribbon is preferred to have a region in which a KIKUCHI pattern is detected when the crystalline phase is subjected to EBSD analysis. Also, the thickness of the magnetic ribbon is preferred to be 25 ?m or less.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 2, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Tadao SAITO, Takahiro MAEDA, Satoru HABU
  • Patent number: 11346613
    Abstract: A heat regenerating material particle of an embodiment contains a heat regenerating substance having a maximum value of specific heat at a temperature of 20 K or less is 0.3 J/cm3·K or more, and one metal element selected from the group consisting of calcium (Ca), magnesium (Mg), beryllium (Be), strontium (Sr), aluminum (Al), iron (Fe), copper (Cu), nickel (Ni), and cobalt (Co). The heat regenerating material particle includes a first region and a second region, the second region is closer to an outer edge of the heat regenerating material particle than the first region, and the second region has a higher concentration of the metal element than the first region.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 31, 2022
    Assignees: Kabushiki Kaisha Toshiba, TOSHIBA MATERIALS CO., LTD.
    Inventors: Tomohiro Yamashita, Takahiro Kawamoto, Tomoko Eguchi, Takashi Kuboki
  • Publication number: 20220130644
    Abstract: A plasma processing apparatus includes: a chamber including a first member, and a second member detachable from the first member; a conductive member disposed between the first member and the second member; and a first high frequency power supply generating plasma in the chamber. The conductive member includes a resin member made of a resin material, and a metal film covering a surface of the resin member.
    Type: Application
    Filed: March 13, 2020
    Publication date: April 28, 2022
    Applicants: Noa Leading Co., Ltd., TOSHIBA MATERIALS CO., LTD.
    Inventors: Masahiro YOKOTA, Akihiko HAPPOYA, Ken TAKAHASHI, Shusuke MORITA, Jiro OSHIMA, Shuichi SAITO, Noriaki YAGI, Atsuya SASAKI
  • Publication number: 20220104350
    Abstract: A ceramic copper circuit board according to an embodiment includes a ceramic substrate and a first copper part. The first copper part is bonded at a first surface of the ceramic substrate via a first brazing material part. The thickness of the first copper part is 0.6 mm or more. The side surface of the first copper part includes a first sloped portion. The width of the first sloped portion is not more than 0.5 times the thickness of the first copper part. The first brazing material part includes a first jutting portion jutting from the end portion of the first sloped portion. The length of the first jutting portion is not less than 0 ?m and not more than 200 ?m. The contact angle between the first jutting portion and the first sloped portion is 65° or less.
    Type: Application
    Filed: December 9, 2021
    Publication date: March 31, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hiromasa KATO, Takashi SANO
  • Publication number: 20220104351
    Abstract: A ceramic copper circuit board according to an embodiment includes a ceramic substrate and a first copper part. The first copper part is bonded at a first surface of the ceramic substrate via a first brazing material part. The thickness of the first copper part is 0.6 mm or more. The side surface of the first copper part includes a first sloped portion. The width of the first sloped portion is not more than 0.5 times the thickness of the first copper part. The first brazing material part includes a first jutting portion jutting from the end portion of the first sloped portion. The length of the first jutting portion is not less than 0 ?m and not more than 200 ?m. The contact angle between the first jutting portion and the first sloped portion is 65° or less.
    Type: Application
    Filed: December 9, 2021
    Publication date: March 31, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hiromasa KATO, Takashi SANO
  • Publication number: 20220100045
    Abstract: According to one embodiment, provided is an electrochromic device including an electrochromic layer, which contains a tungsten oxide material. The tungsten oxide material includes potassium-containing tungsten oxide particles having an average particle size of 100 nm or less. The potassium-containing tungsten oxide particles contain potassium within a range of 1 mol % to 50 mol %, and include a central section and a peripheral section adjacent to the central section. A periodicity of a crystal varies between the central section and the peripheral section.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 31, 2022
    Applicants: TOSHIBA MATERIALS CO., LTD., HAYASHI TELEMPU CORPORATION
    Inventors: Daisuke FUKUSHI, Shuichi SAITO, Michiaki FUKUI
  • Patent number: 11277911
    Abstract: A ceramic copper circuit board according to an embodiment includes a ceramic substrate and a first copper part. The first copper part is bonded at a first surface of the ceramic substrate via a first brazing material part. The thickness of the first copper part is 0.6 mm or more. The side surface of the first copper part includes a first sloped portion. The width of the first sloped portion is not more than 0.5 times the thickness of the first copper part. The first brazing material part includes a first jutting portion jutting from the end portion of the first sloped portion. The length of the first jutting portion is not less than 0 ?m and not more than 200 ?m. The contact angle between the first jutting portion and the first sloped portion is 65° or less.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: March 15, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hiromasa Kato, Takashi Sano
  • Publication number: 20220037225
    Abstract: A ceramic copper circuit board including a ceramic substrate, and a copper circuit part located on the ceramic substrate, wherein an arbitrary line parallel to a first direction at a cross section of the copper circuit part parallel to the first direction crosses multiple copper crystal grains, the first direction is from the ceramic substrate toward the copper circuit part, an average of multiple distances in a second direction between the line and edges of the copper crystal grains is not more than 300 ?m, and the second direction is perpendicular to the first direction.
    Type: Application
    Filed: September 7, 2021
    Publication date: February 3, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Takayuki NABA, Hiromasa KATO, Keiichi YANO
  • Patent number: 11220740
    Abstract: The manufacturing cost of a sputtering target is reduced and the impurity concentration of the manufactured sputtering target is also reduced. A method of manufacturing a sputtering target includes: surface-treating at least one of a used sputtering target and a scrap material; melting at least one of the used sputtering target and the scrap material after the surface treatment to form an ingot; and manufacturing a sputtering target by subjecting the ingot to forging, rolling, heat treating, and machining.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 11, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Tooru Komatsu, Nobuaki Nakashima
  • Publication number: 20220002166
    Abstract: According to one embodiment, a tungsten oxide powder is provided. The tungsten oxide has an average particle size along a major axis of 10 ?m or less, an average aspect ratio of 10 or less, and 0 to 4 crystal defects per unit area of 9 nm2 on a surface or sectional surface in a direction of a minor axis of a primary particle.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Daisuke FUKUSHI, Hideaki HIRABAYASHI, Akito SASAKI, Ryosuke HIRAMATSU, Atsuya SASAKI, Takaki MOROOKA, Yoichiro MORI
  • Patent number: 11211526
    Abstract: A semiconductor light-emitting element having an emission peak wavelength of 395 nm or more and 425 nm or less, comprises: a substrate including a first surface and a second surface, at least one surface selected from the group consisting of the first and second surfaces having an uneven region; a semiconductor layer on the first surface; and a multilayer reflective film on the second surface or the semiconductor layer, wherein the multilayer reflective film includes a structure having a plurality of first dielectric films and a plurality of second dielectric films, the first dielectric films and the second dielectric films being alternately stacked.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: December 28, 2021
    Assignees: TOSHIBA MATERIALS CO., LTD., MEIJO UNIVERSITY
    Inventors: Satoshi Kamiyama, Atsuya Sasaki, Ryosuke Hiramatsu, Hideaki Hirabayashi
  • Patent number: 11211529
    Abstract: A semiconductor light-emitting element according to an embodiment has a light emission peak wavelength not less than 380 nm and not more than 425 nm. The semiconductor light-emitting element includes a stacked structure including a reflective layer, a substrate provided on the reflective layer, and a semiconductor layer provided on the substrate. An uneven structure is provided in a surface of the substrate on the semiconductor layer side. The semiconductor layer includes a buffer layer made of aluminum nitride and having a thickness not less than 10 nm and not more than 100 nm. The buffer layer includes oxygen; and 0.01?O8nm/O3nm?0.5 is satisfied, where O3nm (at %) is the oxygen concentration at a depth of 3 nm of the buffer layer, and O8nm (at %) is the oxygen concentration at a depth of 8 nm of the buffer layer.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: December 28, 2021
    Assignees: TOSHIBA MATERIALS CO., LTD., MEIJO UNIVERSITY
    Inventors: Ryosuke Hiramatsu, Atsuya Sasaki, Hideaki Hirabayashi, Satoshi Kamiyama
  • Publication number: 20210398928
    Abstract: A bonded body according to an embodiment includes a substrate, a metal member, and a bonding layer. The bonding layer is provided between the substrate and the metal member. The bonding layer includes a first particle including carbon, a first region including a metal, and a second region including titanium. The second region is provided between the first particle and the first region. A concentration of titanium in the second region is greater than a concentration of titanium in the first region.
    Type: Application
    Filed: September 2, 2021
    Publication date: December 23, 2021
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Maki YONETSU, Seiichi SUENAGA, Sachiko FUJISAWA, Takayuki NABA
  • Patent number: 11198933
    Abstract: The manufacturing cost of a sputtering target is reduced and the impurity concentration of the manufactured sputtering target is also reduced. A method of manufacturing a sputtering target includes: surface-treating at least one of a used sputtering target and a scrap material; melting at least one of the used sputtering target and the scrap material after the surface treatment to form an ingot; and manufacturing a sputtering target by subjecting the ingot to forging, rolling, heat treating, and machining.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: December 14, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Tooru Komatsu, Nobuaki Nakashima
  • Patent number: 11181649
    Abstract: A fluorescent screen is configured to convert an X-ray into visible light to one embodiment. The screen includes a gadolinium oxysulfide phosphor activated with praseodymium and cerium. The phosphor contains praseodymium having a concentration of 0.01 mass % or more and 0.3 mass % or less and cerium having a concentration of 5 ppm or more and 30 ppm or less. An average particle diameter of the phosphor is 10 ?m or more and 20 ?m or less. A weight per unit area of the phosphor is 270 mg/cm2 or more and 380 mg/cm2 or less.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: November 23, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Eiji Oyaizu, Makoto Hayashi
  • Publication number: 20210309904
    Abstract: A cold storage material, which has a large specific heat and a small magnetization in an extremely low temperature region and has satisfactory manufacturability, is provided, and a method for manufacturing the same is provided. Further, a refrigerator having high efficiency and excellent cooling performance is provided by filling this refrigerator with the above-described cold storage material. Moreover, a device incorporating a superconducting coil capable of reducing influence of magnetic noise derived from a cold storage material is provided. The cold storage material of embodiments is a granular body composed of an intermetallic compound in which the ThCr2Si2-type structure 11 occupies 80% by volume or more, and has a crystallite size of 70 nm or less.
    Type: Application
    Filed: March 24, 2021
    Publication date: October 7, 2021
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Takahiro KAWAMOTO, Tomoko EGUCHI, Tomohiro YAMASHITA, Masaya HAGIWARA, Akiko SAITO, Daichi USUI
  • Patent number: 11136244
    Abstract: The present invention provides a rare earth cold accumulating material particle comprising a rare earth oxide or a rare earth oxysulfide, wherein the rare earth cold accumulating material particle is composed of a sintered body; an average crystal grain size of the sintered body is 0.5 to 5 ?m; a porosity of the sintered body is 10 to 50 vol. %; and an average pore size of the sintered body is 0.3 to 3 ?m. Further, it is preferable that the porosity of the rare earth cold accumulating material particle is 20 to 45 vol. %, and a maximum pore size of the rare earth cold accumulating material particle is 4 ?m or less. Due to this structure, there can be provided a rare earth cold accumulating material having a high refrigerating capacity and a high strength.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: October 5, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Katsuhiko Yamada, Keiichi Fuse
  • Patent number: 11130194
    Abstract: The friction stir welding tool member according to the present invention is made of a ceramic member in which a shoulder portion and a probe portion are integrally formed, wherein a root portion of the probe portion and an end portion of the shoulder portion have a curved surface shape; and the friction stir welding tool member has a ratio (R1/D) of 0.02 or more and 0.20 or less when a curvature radius of the end portion of the shoulder portion is defined as R1 (mm) and an outer diameter of the shoulder portion is defined as D (mm). In addition, the ceramic member is preferably made of a silicon nitride sintered body having a Vickers hardness of 1400 HV1 or more. According to the above-described configuration, a friction stir welding tool member having excellent durability can be provided.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: September 28, 2021
    Assignees: OSAKA UNIVERSITY, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hidetoshi Fujii, Yoshiaki Morisada, Kai Funaki, Isao Ikeda, Yutaka Abe, Masahiro Kato
  • Patent number: 11129282
    Abstract: According to one embodiment, a method for manufacturing a ceramic circuit board is disclosed. The ceramic circuit board includes a copper plate bonded to at least one surface of a ceramic substrate via a brazing material layer including Ag, Cu, and a reactive metal. The method includes: preparing a ceramic circuit board in which a copper plate is bonded on a ceramic substrate via a brazing material layer, and a portion of the brazing material layer is exposed between a pattern shape of the copper plate; a first chemical polishing process of chemically polishing the portion of the brazing material layer; and a first brazing material etching process of etching the chemically polished portion of the brazing material layer by using an etchant having a pH of 6 or less and including one type or two types selected from hydrogen peroxide and ammonium peroxodisulfate.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: September 21, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hiromasa Kato, Hideaki Hirabayashi, Fumiyuki Kawashima, Akito Sasaki
  • Publication number: 20210284548
    Abstract: The present invention provides a rare earth cold accumulating material particle comprising a rare earth oxide or a rare earth oxysulfide, wherein the rare earth cold accumulating material particle is composed of a sintered body; an average crystal grain size of the sintered body is 0.5 to 5 ?m; a porosity of the sintered body is 10 to 50 vol. %; and an average pore size of the sintered body is 0.3 to 3 ?m. Further, it is preferable that the porosity of the rare earth cold accumulating material particle is 20 to 45 vol. %, and a maximum pore size of the rare earth cold accumulating material particle is 4 ?m or less. Due to this structure, there can be provided a rare earth cold accumulating material having a high refrigerating capacity and a high strength.
    Type: Application
    Filed: May 26, 2021
    Publication date: September 16, 2021
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Katsuhiko YAMADA, Keiichi FUSE