Patents Assigned to NGK Insulators
  • Patent number: 11511596
    Abstract: An acoustic wave generation unit oscillates working fluid of 35 atm or less so as to generate acoustic waves with a frequency in a range from 50 Hz or more and 500 Hz or less. A heat/acoustic wave conversion component has a partition wall of 5.0 W/mK or less between two end faces which defines a plurality of cells of 620 cells/cm2 or more and 3100 cells/cm2 or less. A heat exchanger disposed close to one end face receives heat from a first external air flowing into the heat exchanger and gives the heat to the one end face so as to flow out a cold air. Another heat exchanger disposed close to the other end face receives heat from the other end face and gives the heat to a second external air flowing into the another heat exchanger so as to flow out a warm air.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: November 29, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukio Miyairi, Shinichi Miwa
  • Patent number: 11515570
    Abstract: Provided is a secondary battery including: a positive electrode plate composed of an inorganic material containing a positive electrode active material in an oxide form and having a thickness of 25 ?m or more; a negative electrode plate composed of an inorganic material containing a negative electrode active material in an oxide form and having a thickness of 25 ?m or more; and an inorganic solid electrolyte, the secondary battery being charged and discharged at a temperature of 100° C. or higher.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: November 29, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukihisa Takeuchi, Iwao Owada, Yukinobu Yura, Yosuke Sato, Toshihiro Yoshida, Yuji Katsuda
  • Patent number: 11511368
    Abstract: An electrically conductive tip member includes: an inner periphery portion including a Cu matrix phase and a second phase that is dispersed in the Cu matrix phase and contains a Cu—Zr-based compound, the inner periphery portion having an alloy composition of Cu-xZr (where x is the atomic percentage of Zr and satisfies 0.5?x?16.7); and an outer periphery portion that is present on an outer circumferential side of the inner periphery portion, made of a metal containing Cu, and has higher electrical conductivity than the inner periphery portion.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: November 29, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Naokuni Muramatsu, Takanari Nakajima, Takashi Goto
  • Patent number: 11511236
    Abstract: The monolithic separation membrane structure includes a monolithic base, an intermediate layer and a separation membrane. The monolithic base has a plurality of filtration cells extending from a first end face to a second end face. The intermediate layer is formed on an inner surface of the filtration cells. The separation membrane is formed on an inner surface of the intermediate layer. An inner diameter not including the intermediate layer and the separation membrane of the plurality of respective filtration cells is greater than or equal to 1.0 mm to less than or equal to 2.0 mm. A partition wall thickness not including the intermediate layer and the separation membrane of the shortest portion of two adjacent filtration cells of the plurality of filtration cells is greater than or equal to 0.05 mm to less than 0.2 mm. A thickness of the intermediate layer is greater than or equal to 20 ?m to less than 100 ?m.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: November 29, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Masahiro Furukawa, Kei Tanaka, Aya Miura
  • Patent number: 11511268
    Abstract: A pillar-shaped honeycomb structure including an outer peripheral side wall, a plurality of first cells provided on an inner peripheral side of the outer peripheral side wall, the first cells extending from a first end surface to a second end surface, each opening on the first end surface and having a sealing portion with an average void ratio of 4% or less on the second end surface, and a plurality of second cells provided on the inner peripheral side of the outer peripheral side wall, the second cells extending from the first end surface to the second end surface, each having a sealing portion with an average void ratio of 4% or less on the first end surface and opening on the second end surface, the first cells and the second cells being alternately arranged adjacent to each other with a partition wall interposed therebetween.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: November 29, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Shuji Ueda, Shungo Nagai, Hiroaki Hayashi
  • Patent number: 11515180
    Abstract: In a ceramic heater, a central-zone heating resistor and an outer-peripheral-zone heating resistor are embedded in a disc-like ceramic base having a wafer-mounting surface on one side. The central-zone heating resistor is a wire extending in a single continuous line from one of a pair of terminals to the other. The pair of terminals as a whole form a circular shape in plan view.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 29, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Hiroshi Takebayashi, Kengo Torii, Natsuki Hirata
  • Publication number: 20220371405
    Abstract: A heater element for heating a vehicle interior includes a pillar shaped honeycomb structure portion having: an outer peripheral wall; and partition walls arranged on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells forming a flow path from a first end face to a second end face. The outer peripheral wall and the partition walls are made of a material having PTC characteristics. The heater element further includes a dense insulating film that covers at least a part of the pillar shaped honeycomb structure portion.
    Type: Application
    Filed: August 5, 2022
    Publication date: November 24, 2022
    Applicant: NGK Insulators, Ltd.
    Inventors: Yukio MIYAIRI, Masaaki MASUDA, Yoshifumi TAKAGI, Yunie IZUMI, Toru HAYASE
  • Publication number: 20220376318
    Abstract: A plurality of storage batteries are divided into a plurality of storage battery blocks. A useful life of each of the storage batteries is shorter than the project life. Total capacity of the plurality of storage batteries is equal to or greater than the product of capacity required for a project and a ratio of the project life to the useful life. The project life is divided into a plurality of periods. For each of the plurality of periods, a rest storage battery block is selected from the plurality of storage battery blocks in rotation, the rest storage battery block is rested, and an operational storage battery block is operated. The sum of actual operating time of each of the storage battery blocks and equivalent operating time of each of the storage battery blocks is prevented from exceeding the useful life during the project life.
    Type: Application
    Filed: August 3, 2022
    Publication date: November 24, 2022
    Applicant: NGK Insulators, Ltd.
    Inventor: Hiroyuki Abe
  • Publication number: 20220377850
    Abstract: An electrostatic chuck heater includes a resistance heating element. A region of the resistance heating element from one end to another end of the resistance heating element is divided into a plurality of sections. Recessed grooves are provided in the respective sections along a longitudinal direction of the resistance heating element in a surface. In a connection portion between the recessed grooves that are provided in the adjacent sections, a projection portion that extends along the connection portion is provided.
    Type: Application
    Filed: August 3, 2022
    Publication date: November 24, 2022
    Applicant: NGK Insulators, Ltd.
    Inventors: Takayoshi AKAO, Natsuki HIRATA
  • Publication number: 20220362704
    Abstract: A pillar shaped honeycomb structure includes: an outer peripheral wall; and porous partition walls disposed on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein the cells include a plurality of wire pieces made of a magnetic substance, the wire pieces being provided apart from each other via spaces or buffer materials in an extending direction of the cells.
    Type: Application
    Filed: July 6, 2022
    Publication date: November 17, 2022
    Applicant: NGK Insulators, Ltd.
    Inventors: Kazuya HOSODA, Takafumi KIMATA, Yunie IZUMI
  • Publication number: 20220363560
    Abstract: A layered double hydroxide is represented by the following formula (I): Ni2+1?(x+y+z)Fe3+xV3+yCo3+z(OH)2An?(x+y+z)/n·mH2O . . . (I). In one embodiment, in the formula (I), (x+y+z) is from 0.2 to 0.5, “x” represents more than 0 and 0.3 or less, “y” represents from 0.04 to 0.49, and “z” represents more than 0 and 0.2 or less.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 17, 2022
    Applicant: NGK Insulators, Ltd.
    Inventors: Ozora KANO, Naomi HASHIMOTO, Naomi SAITO, Yukari SAKURAYAMA
  • Publication number: 20220369425
    Abstract: A method of manufacturing a ceramic heater, the method includes the steps of: (a) forming, on a surface of a first ceramic fired layer or an unfired layer, a resistance heating element or its precursor in a predetermined pattern; (b) forming a recessed groove along a longitudinal direction by radiating laser light to the resistance heating element or its precursor; (c) obtaining a layered body by disposing a second ceramic unfired layer on the surface of the first ceramic fired layer or the unfired layer; and (d) obtaining the ceramic heater in which the resistance heating element is embedded in a ceramic substrate by performing hot press firing on the layered body, wherein, in the step (b), the recessed groove is formed such that a side wall surface of the recessed groove is inclined relative to the surface of the first ceramic fired layer or the unfired layer.
    Type: Application
    Filed: July 29, 2022
    Publication date: November 17, 2022
    Applicant: NGK Insulators, Ltd.
    Inventors: Takayoshi AKAO, Natsuki HIRATA
  • Patent number: 11499921
    Abstract: A method for inspecting a pillar-shaped honeycomb structure includes steps of: capturing a pattern of reflected light from an end face with a camera and generating an image data of the pattern of the reflected light; distinguishing positional information of each of cells adjacent to an outer peripheral side wall and cells that are not adjacent to the outer peripheral side wall based on the image data of the pattern of the reflected light, and storing the distinguished positional information in a memory; capturing a pattern of transmitted light from the end face with the camera and generating an image data of the pattern of the transmitted light; measuring intensity of each transmitted light from the cells adjacent to the outer peripheral side wall to detect the cells having defective plugged portions that are adjacent to the outer peripheral side wall based on the generated image data of the pattern of the transmitted light and the positional information; and measuring intensity of each transmitted light from
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: November 15, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Ryota Kurahashi, Yoshihiro Sato, Takafumi Terahai
  • Patent number: 11498035
    Abstract: A zeolite membrane complex includes a porous support, and a zeolite membrane formed on the support. The zeolite membrane includes a zeolite crystal phase constituted by a plurality of zeolite crystals, and a dense grain boundary phase, which is a region between the plurality of zeolite crystals. A density of at least part of the grain boundary phase is smaller than a density of the zeolite crystal phase. A width of the grain boundary phase is 2 nm or more and 10 nm or less. Accordingly, it is possible to realize high permeability and high separating performance, and high durability of the zeolite membrane.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: November 15, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Naoto Kinoshita, Makiko Ichikawa, Kenji Yajima, Makoto Miyahara, Katsuya Shimizu
  • Patent number: 11492264
    Abstract: Seed crystals are crystals of zeolite to be attached onto a support in production of a zeolite membrane complex including the support and a zeolite membrane formed on the support. The specific surface area of the seed crystals is not smaller than 10 m2/g and not larger than 150 m2/g. The strength obtained from a crystal component at a diffraction angle 2? indicating a maximum peak in a range of diffraction angle 2? from 12° to 25° in an X-ray diffraction pattern obtained by emitting X-ray to the seed crystals is not less than once and not more than 30 times that obtained from an amorphous component. It is thereby possible to improve adherence of the seed crystals to the support.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: November 8, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Ryotaro Yoshimura, Aya Miura, Kenichi Noda
  • Patent number: 11492295
    Abstract: A method for producing a honeycomb structure, the method comprising the steps of: kneading a forming raw material containing a cordierite forming material and then forming it to produce a honeycomb formed body; and firing the honeycomb formed body to provide a honeycomb structure. In the producing method, from 0.1 to 6.0 parts by mass of a magnesium silicate mineral having a 2:1 ribbon type structure per 100 parts by mass of the cordierite forming material is added to the forming raw material.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: November 8, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Shingo Tokuda, Shuji Ueda, Takayuki Kanetake
  • Patent number: 11478953
    Abstract: A manufacturing method of a honeycomb structure, including a vertical extrusion process, wherein the vertical extrusion process includes: an extrusion step of extruding the molding compound in the vertically downward direction from an extrusion die attached to an extruder; a honeycomb formed body receiving step in which a transfer pallet is placed at a position near the extrusion die, and a honeycomb formed body formed by continuously extruding the molding compound in the extrusion step is received and supported from below by the transfer pallet; and a pallet lowering step of lowering the transfer pallet while receiving and supporting the honeycomb formed body in synchronization with an extrusion speed of the molding compound from the extrusion die, and the transfer pallet is constituted of a laminate structure including: a pallet substrate; and a tabular mesh plate.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: October 25, 2022
    Assignee: NGK Insulators, Ltd.
    Inventor: Kensuke Okumura
  • Patent number: 11483901
    Abstract: A ceramic heater includes a ceramic plate having a wafer mounting surface and having a resistive heating element embedded in the plate; and a ceramic tubular shaft having a tubular shape and bonded to a back surface of the plate. The plate has a circular recess with a bottom in the back surface thereof. The tubular shaft has a plate-side flange extending radially outward from an outer peripheral surface of a plate-side end portion. An entire end surface of the plate-side end portion of the tubular shaft is bonded to a bonding region of the back surface of the plate outside the circular recess. The opening diameter d1 of the plate-side end portion of the tubular shaft, the inner diameter d2 of the plate-side flange of the tubular shaft, and the diameter D1 of the circular recess of the plate satisfy d2?d1?D1.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: October 25, 2022
    Assignee: NGK Insulators, Ltd.
    Inventor: Yutaka Unno
  • Patent number: 11480081
    Abstract: When the porous ceramic structure contains Co together with Fe or Mn, the Co content is higher than or equal to 0.1 mass % and lower than or equal to 3.0 mass % in terms of Co3O4, and when the porous ceramic structure contains Co without containing Fe and Mn, the Co content is higher than or equal to 0.2 mass % and lower than or equal to 6.0 mass % in terms of Co3O4. The ratio of the sum of the Fe content in terms of Fe2O3, the Mn content in terms of Mn2O3, and the Co content in terms of Co3O4 to the Ce content in terms of CeO2 is higher than or equal to 0.8 and lower than or equal to 9.5.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: October 25, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yunie Izumi, Kennichi Hidaka, Akihiro Miura
  • Publication number: 20220333871
    Abstract: A heat exchanger includes a hollow pillar shaped honeycomb structure, a first outer cylindrical member, an inner cylindrical member, an upstream cylindrical member, a cylindrical connecting member and a downstream cylindrical member. The inner cylindrical member includes a tapered portion whose diameter is reduced from a position of a second end face of the pillar shaped honeycomb structure to the downstream end portion side. A ratio of a difference between an inner diameter of the downstream end portion of the inner cylindrical member and an inner diameter of the downstream end portion of the upstream cylindrical member to the inner diameter of the downstream end portion of the upstream cylindrical member is within ±20%.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Applicant: NGK Insulators, Ltd.
    Inventors: Tatsuya AKAHANI, Tatsuo KAWAGUCHI, Makoto YOSHIHARA