Patents Assigned to Japan Fine Ceramics Center
  • Publication number: 20220169571
    Abstract: A method for producing an alumina sintered body, comprising: molding an alumina powder to obtain an alumina article, the alumina powder comprising alumina particles having a particle diameter of not less than 0.1 ?m and less than 1 ?m, and alumina particles having a particle diameter of not less than 1 ?m and less than 100 ?m; forming a carbon powder-containing layer on a surface of the alumina article to obtain a laminate body; and irradiating a surface of the carbon powder-containing layer of the laminate body with a laser light to form a transparent alumina sintered portion.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 2, 2022
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, JAPAN FINE CERAMICS CENTER
    Inventors: Teiichi KIMURA, Satoshi SUEHIRO, Tomomichi NASU, Kousuke UOE
  • Patent number: 11335532
    Abstract: As a device for correcting positive spherical aberration of an electromagnetic lens for a charged particle beam, a spherical aberration correction device combining a hole electrode and a ring electrode is known. In this spherical aberration correction device, when a voltage is applied between the hole electrode and the ring electrode, the focus of the charged particle beam device changes due to the convex lens effect generated in the hole electrode. Therefore, in a charged particle beam device including a charged particle beam source which generates a charged particle beam, a charged particle beam aperture having a ring shape, and a charged particle beam aperture power supply which applies a voltage to the charged particle beam aperture, the charged particle beam aperture power supply is configured to apply, to the charged particle beam aperture, a voltage having a polarity opposite to a polarity of charges of the charged particle beam.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: May 17, 2022
    Assignees: Hitachi High-Tech Corporation, Japan Fine Ceramics Center
    Inventors: Tsunenori Nomaguchi, Shunichi Motomura, Tadahiro Kawasaki, Takeharu Kato, Ryuji Yoshida
  • Patent number: 11231208
    Abstract: A solar heat collector tube in which at least an infrared reflective layer, a sunlight-heat conversion layer and an anti-reflection layer are provided on the outer surface of a tube through the interior of which a heat medium can flow, wherein the infrared reflective layer in the solar heat collector tube is an Ag layer having Nb dispersed therein, the content of Nb being 0.1 at % to 31.8 at %.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: January 25, 2022
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN FINE CERAMICS CENTER
    Inventors: Takuhito Tsutsui, Toru Sasatani, Kazuto Noritake, Yoshiki Okuhara, Tomohiro Kuroyama, Daisuke Igimi
  • Patent number: 11164716
    Abstract: When using a charged particle beam aperture having a ring shape in a charged particle beam device, the charged particle beam with the highest current density immediately above the optical axis, among the charged particle beams is blocked, so that it is difficult to dispose the charged particle beam aperture at the optimal mounting position. Therefore, in addition to the ring-shaped charged particle beam aperture, a hole-shaped charged particle beam aperture is provided, and it is possible to switch between the case where the ring-shaped charged particle beam aperture is disposed on the optical axis of the charged particle beam and the case where the hole-shaped charged particle beam aperture is disposed on the optical axis of the charged particle beam.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: November 2, 2021
    Assignees: Hitachi High-Tech Corporation, Japan Fine Ceramics Center
    Inventors: Shunichi Motomura, Tsunenori Nomaguchi, Tadahiro Kawasaki, Takeharu Kato, Ryuji Yoshida
  • Patent number: 11149987
    Abstract: A solar heat collector tube in which at least an infrared reflective layer, a sunlight-heat conversion layer and an anti-reflection layer are provided on the outer surface of a tube, through the interior of which a heat medium can flow, wherein the infrared reflective layer is an Ag layer in which silicon, silicon nitride or a mixture thereof is dispersed, and a method for producing the solar heat collector tube wherein the infrared reflective layer that is an Ag layer, in which silicon, silicon nitride or a mixture thereof is dispersed, is formed by sputtering in the presence of a gas including nitrogen gas, with Ag and silicon being used as targets.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 19, 2021
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN FINE CERAMICS CENTER
    Inventors: Takuhito Tsutsui, Toru Sasatani, Kazuto Noritake, Yoshiki Okuhara, Tomohiro Kuroyama, Daisuke Igimi
  • Publication number: 20210206021
    Abstract: The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.
    Type: Application
    Filed: March 19, 2021
    Publication date: July 8, 2021
    Applicants: Japan Fine Ceramics Center, NORITAKE CO., LIMITED, TOTO LTD., NGK INSULATORS, LTD., NGK SPARK PLUG CO., LTD.
    Inventors: Teiichi KIMURA, Satoshi SUEHIRO
  • Publication number: 20210199054
    Abstract: A thermal barrier coating material contains a compound X that is a cation-deficient-type defective perovskite complex oxide. Unit cells of the compound X each include six oxygen atoms and has a structure in which two octahedrons sharing one oxygen atom are aligned. In the compound X, central axes of two octahedrons that belong to adjacent unit cells, respectively, and are adjacent to each other are inclined relative to each other. A plurality of sets of the two octahedrons that belong to the adjacent unit cells, respectively, and are adjacent to each other are arranged to form a periodic structure in which octahedrons having different inclinations are alternately arranged, and the compound X has a boundary surface at which a periodicity of the periodic structure changes, in a crystal structure thereof.
    Type: Application
    Filed: September 2, 2019
    Publication date: July 1, 2021
    Applicants: JAPAN FINE CERAMICS CENTER, TOCALO CO., LTD.
    Inventors: Tsuneaki MATSUDAIRA, Satoshi KITAOKA, Naoki KAWASHIMA, Takeharu KATO, Daisaku YOKOE, Takashi OGAWA, Craig FISHER, Yoichiro HABU, Mikako NAGAO, Yoshiyasu ITO, Yuhei OHIDE, Kaito TAKAGI
  • Publication number: 20210172654
    Abstract: This invention provides a solar heat-collecting pipe that includes, in the stated order from the inner side on the outer surface of a ferrous material pipe through the interior of which a heat transfer medium is allowed to flow, at least a first diffusion-preventing layer, a second diffusion-preventing layer, an infrared radiation-reflecting layer, a sunlight-to-heat conversion layer and an anti-reflection layer. The first diffusion-preventing layer includes at least one selected from the group consisting of silicon oxide, aluminum oxide and chromium oxide. The second diffusion-preventing layer includes at least one selected from the group consisting of tantalum nitride, tantalum oxynitride, titanium nitride, titanium oxynitride, niobium nitride, and niobium oxynitride.
    Type: Application
    Filed: July 26, 2019
    Publication date: June 10, 2021
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN FINE CERAMICS CENTER
    Inventors: Takuhito TSUTSUI, Kazuto NORITAKE, Yoshiki OKUHARA, Tomohiro KUROYAMA, Daisuke IGIMI
  • Patent number: 11027454
    Abstract: The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: June 8, 2021
    Assignees: Japan Fine Ceramics Center, NORITAKE CO., LIMITED, TOTO LTD., NGK INSULATORS, LTD., NGK SPARK PLUG CO., LTD.
    Inventors: Teiichi Kimura, Satoshi Suehiro
  • Patent number: 11009264
    Abstract: A solar heat collector tube in which at least an infrared reflective layer, a sunlight-heat conversion layer and an anti-reflection layer are provided on the outer surface of a tube, through the interior of which a heat medium can flow, wherein the infrared reflective layer in the solar heat collector tube has a multilayer structure in which an Ag layer, having dispersed therein at least one metal selected from the group consisting of Mo, W, Ta, Nb and Al, is sandwiched between two metal protective layers.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: May 18, 2021
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN FINE CERAMICS CENTER
    Inventors: Takuhito Tsutsui, Toru Sasatani, Kazuto Noritake, Yoshiki Okuhara, Tomohiro Kuroyama, Daisuke Igimi
  • Patent number: 10987826
    Abstract: The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: April 27, 2021
    Assignees: Japan Fine Ceramics Center, NORITAKE CO., LIMITED, TOTO LTD., NGK INSULATORS, LTD., NGK SPARK PLUG CO., LTD.
    Inventors: Teiichi Kimura, Satoshi Suehiro
  • Publication number: 20210047968
    Abstract: A thermal barrier coating includes: a metal bonding layer made of an alloy containing Al; a thermal barrier layer; and an intermediate layer provided between the metal bonding layer and the thermal barrier layer. The thermal barrier layer contains a compound represented by the following general formula (1), LnxTayHfzO(3x+5y+4z)/2 (1) (wherein Ln is an atom of one element selected from among rare earth elements, x is 0 to 1.0, y is 0.8 to 3.0, and z is 0 to 7.0). The intermediate layer contains at least one layer selected from among the following (A) to (C): (A) a layer containing hafnium oxide (HfO2) as a main component; (B) a layer containing, as a main component, a compound consisting of tantalum (Ta), hafnium (Hf), and oxygen (O); and (C) a layer containing, as a main component, a compound consisting of a rare earth element, tantalum (Ta), hafnium (Hf), and oxygen (O).
    Type: Application
    Filed: March 1, 2019
    Publication date: February 18, 2021
    Applicants: JAPAN FINE CERAMICS CENTER, TOCALO CO.,LTD.
    Inventors: Tsuneaki MATSUDAIRA, Satoshi KITAOKA, Naoki KAWASHIMA, Daisaku YOKOE, Makoto TANAKA, Yoichiro HABU, Mikako NAGAO, Kazuo NODA, Yoshiyasu ITO, Yuhei OHIDE, Kaito TAKAGI
  • Patent number: 10889526
    Abstract: An environmental resistant coating member includes a SiC long fiber-reinforced ceramics substrate and an environmental barrier coating layer provided on the whole surface of the SiC long fiber-reinforced ceramics substrate. The environmental barrier coating layer includes a SiAlON bonding layer laminated on the SiC long fiber-reinforced ceramics substrate, a mullite layer laminated on the SiAlON bonding layer, a reaction inhibition layer laminated on the mullite layer, and a gradient layer formed on the reaction inhibition layer that gradually changes from a rare-earth disilicate to a rare-earth monosilicate. The reaction inhibition layer includes at least one of an alumina layer, a garnet layer, and a rare-earth (mono)silicate layer. When the reaction inhibition layer includes two or more of these layers, the layers are formed in the order of the alumina layer, the garnet layer, and the rare-earth (mono)silicate layer from a mullite layer side toward a gradient layer side.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: January 12, 2021
    Assignees: Japan Fine Ceramics Center, IHI Cornoration
    Inventors: Norio Yamaguchi, Taishi Yokoi, Kenji Nakahira, Hiroshi Nomura, Satoshi Kitaoka, Takeshi Nakamura, Tsuyoshi Takemoto
  • Publication number: 20200277727
    Abstract: A high-temperature-steam-oxidation-resistive coated reinforcement fiber applicable to a fiber reinforced composite, is provided with: a reinforcement fiber; a coating layer covering the reinforcement fiber and including a rare-earth silicate; an exfoliative layer intervening in an interface between the coating layer and the reinforcement fiber; and a supplemental coating layer covering the reinforcement fiber, the exfoliative layer and the coating layer.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Applicants: IHI CORPORATION, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, JAPAN FINE CERAMICS CENTER
    Inventors: Takeshi NAKAMURA, Masahiro Kotani, Ken Goto, Akihiko Ito, Satoshi Kitaoka, Daisaku Yokoe, Tetsushi Matsuda
  • Patent number: 10411296
    Abstract: To provide a structural body having a new shape and including a garnet crystal structure. A structural body comprising LiaM1bM2cOd (5?a?8; 2.5?b?3.5; 1.5?c?2.5; 10?d?14; M1 is at least one element selected from Al, Y, La, Pr, Nd, Sm, Lu, Mg, Ca, Sr, or Ba; and M2 is at least one element selected from Zr, Hf, Nb, or Ta) including a garnet crystal structure, wherein in a scanning electron microscopic image obtained through observation of a fracture surface in a depth direction of the structural body, a striped pattern extending along the depth direction is shown, and/or in a scanning electron microscopic image obtained through observation of a cut surface in the depth direction of the structural body, a continuous body extending along the depth direction is shown.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: September 10, 2019
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Japan Fine Ceramics Center
    Inventors: Yusuke Yamamoto, Junichi Niwa, Teiichi Kimura
  • Patent number: 10302334
    Abstract: This invention is a sunlight-to-heat converting member containing chromium silicide having an element ratio of Cr to Si from 1:1.6 to 1:4.7. This invention is also a sunlight-to-heat converting stack including a layer of the sunlight-to-heat converting member and a metal layer. This invention is also a sunlight-to-heat converting device including a light collecting part, either or both of a container and a flow path where sunlight is collected by the light collecting part, and a heating medium housed in either or both of the container and the flow path. The sunlight-to-heat converting member or the sunlight-to-heat converting stack is formed on a surface of either or both of the container and the flow path. The sunlight-to-heat converting member, the sunlight-to-heat converting stack, and the sunlight-to-heat converting device of this invention can convert light to heat efficiently.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: May 28, 2019
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN FINE CERAMICS CENTER
    Inventors: Takuhito Tsutsui, Kazuto Noritake, Toru Sasatani, Norihito Takeuchi, Takayuki Homma, Yoshiki Okuhara
  • Publication number: 20190092702
    Abstract: An environmental resistant coating member includes a SiC long fiber-reinforced ceramics substrate and an environmental barrier coating layer provided on the whole surface of the SiC long fiber-reinforced ceramics substrate. The environmental barrier coating layer includes a SiAlON bonding layer laminated on the SiC long fiber-reinforced ceramics substrate, a mullite layer laminated on the SiAlON bonding layer, a reaction inhibition layer laminated on the mullite layer, and a gradient layer formed on the reaction inhibition layer that gradually changes from a rare-earth disilicate to a rare-earth monosilicate. The reaction inhibition layer includes at least one of an alumina layer, a garnet layer, and a rare-earth (mono)silicate layer. When the reaction inhibition layer includes two or more of these layers, the layers are formed in the order of the alumina layer, the garnet layer, and the rare-earth (mono)silicate layer from a mullite layer side toward a gradient layer side.
    Type: Application
    Filed: February 21, 2017
    Publication date: March 28, 2019
    Applicants: Japan Fine Ceramics Center, IHI Corporation
    Inventors: Norio YAMAGUCHI, Taishi YOKOI, Kenji NAKAHIRA, Hiroshi NOMURA, Satoshi KITAOKA, Takeshi NAKAMURA, Tsuyoshi TAKEMOTO
  • Publication number: 20190054653
    Abstract: The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.
    Type: Application
    Filed: February 2, 2017
    Publication date: February 21, 2019
    Applicants: Japan Fine Ceramics Center, NORITAKE CO., LIMITED, TOTO LTD., NGK INSULATORS, LTD., NGK SPARK PLUG CO., LTD.
    Inventors: Teiichi KIMURA, Satoshi SUEHIRO
  • Publication number: 20190041098
    Abstract: A solar heat collector tube in which at least an infrared reflective layer, a sunlight-heat conversion layer and an anti-reflection layer are provided on the outer surface of a tube through the interior of which a heat medium can flow, wherein the infrared reflective layer in the solar heat collector tube is an Ag layer having Nb dispersed therein, the content of Nb being 0.1 at % to 31.8 at %.
    Type: Application
    Filed: November 18, 2016
    Publication date: February 7, 2019
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN FINE CERAMICS CENTER
    Inventors: Takuhito TSUTSUI, Toru SASATANI, Kazuto NORITAKE, Yoshiki OKUHARA, Tomohiro KUROYAMA, Daisuke IGIMI
  • Publication number: 20190041097
    Abstract: A solar heat collector tube in which at least an infrared reflective layer, a sunlight-heat conversion layer and an anti-reflection layer are provided on the outer surface of a tube, through the interior of which a heat medium can flow, wherein the infrared reflective layer in the solar heat collector tube has a multilayer structure in which an Ag layer, having dispersed therein at least one metal selected from the group consisting of Mo, W, Ta, Nb and Al, is sandwiched between two metal protective layers.
    Type: Application
    Filed: November 18, 2016
    Publication date: February 7, 2019
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN FINE CERAMICS CENTER
    Inventors: Takuhito TSUTSUI, Toru SASATANI, Kazuto NORITAKE, Yoshiki OKUHARA, Tomohiro KUROYAMA, Daisuke IGIMI